PDM technology analyses medium applied research in mechanical dependability design
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The foundation that 1 dependability designs mechanical product reliability to design an analysis in coordination includes systematic dependability to build mode of model, breakdown and influence and harm sex analysis (FMECA) , fault tree is analysed (FTA) . Systematic dependability analysis studies whole mechanism produces strain interconnected system, model of complex system dependability, analysis evaluates the whole that includes to use each part such as device, control equipment, actuator formerly the method. Breakdown mode and influence hire harm sex to analyse (FMECA) basically is qualitative analysis, pass an analysis, master the breakdown circumstance of mechanical product, can coach the orgnaization is designed directly not only, and also can be the quantitative analysis that undertakes mechanical product reliability further to emulate lay a foundation. Fault tree is analysed (FTA) already OK and qualitative analysis is OK also and quantitative analysis, quantitative analysis can analyse the breakdown of mechanical product further. It is OK that minor failure cultivates quantitative analysis use jointly with systematic dependability model. The examination of accordance of dependability design criterion that Nextpage(1) is based on CAD builds compositive environment to issue mechanical product reliability to design system of criterion knowledge base through compose, gather information of dependability of process of mechanical products plan, can use this knowledge base to undertake dependability designs criterion accordance to examine. Carry example information inquiry, implementation and CAD(are like UG, proE) system is compositive, help management is designed by the spare parts and craft is designed (the information of mechanical product part in CAD) system, use dependability to design criterion knowledge base to undertake to hardware design dependability criterion accordance is checked. (The design of mechanical component probability that 2) is based on CAE is in be based on three-dimensional number prototype and finite yuan on model foundation, pass with CAE software (like NASTRAN, ANSYS) implementation data is mixed interactively compositive emulate, strength of implementation machinery product ruptures dependability probability design, mechanical product wears away / corrode exhaustion of dependability probability design, mechanical product dependability probability design. 3.
2 dependability analysis is emulated (tool of software of the CAD in the process of products plan of FMECA/FTA contemporary machinery that 1) is based on CAD uprights in great quantities person, more mature have Unigraphics, pro/Engineering is waited a moment, on the base that develops 2 times to the CAD tool of the mainstream, this module can realize as alternant as data of CAD software implementation chime to be designed together, reach person of FMECA/FTA process be in harmony in function design process, in coming true to devise dependability product plan thereby. Build compositive environment to leave system of knowledge base of breakdown of mechanical product FMECA through compose, breakdown project information inquires, use these breakdown knowledge to support what products plan and craft design to optimize, realize the improvement of the design to the product and plan finally. In products plan while use this system, design the information of mechanical product part in the system according to the spare parts, the breakdown knowledge in using breakdown knowledge base undertakes to hardware design breakdown is analysed, auxiliary hardware design and system are optimized and improve hardware design, all sorts of repetition when reducing a product to develop and relapse, reduce cost. (The analysis emulates the orgnaization motion dependability that 2) is based on CAE software to be mixed in three-dimensional number prototype finite yuan on model foundation, combine analysis of mechanical intensity dependability to emulate, through be like ADA-MS with CAE(, data of Ls-Dyna) software implementation is mixed interactively automation is compositive emulate, analysis of dependability of precision of error of motion of the orgnaization that finish and emulate, analysis of dependability of function of motion of orgnaization of much rigid body and emulate, analysis of dependability of function of motion of orgnaization of much more flexible system and emulate. (The analysis emulates the mechanical intensity dependability that 3) is based on CAE software to be mixed in three-dimensional number prototype finite yuan on model foundation, analysis of dependability of combinative orgnaization motion is emulated, through be like NAST-RAN with CAE(, data of ANSYS) software implementation is mixed interactively automation is compositive emulate, analysis of dependability of static strength of product of the machinery that finish and emulate, mechanical product moves intensity dependability analysis and emulate, analysis of dependability of mechanical product hot strength is emulated. (The analysis of mechanical and fatigue dependability that 4) is based on CAE software is emulated be based on three-dimensional number prototype and finite yuan of model, and analysis of orgnaization motion dependability is emulated and analysis of mechanical intensity dependability emulates a foundation to go up, through be like MSC with CAE(.
Fatigue, data of implementation of FE_ Safe) software is mixed interactively automation is compositive emulate, product of the machinery that finish is fatigue / rupture life and dependability analysis are emulated. (Dependability of system of 5) mechanical product optimizes an analysis to emulate the foundation that in dependability of mechanical product system integrated balance optimizes a design to go up, combine mechanical product fictitious prototype, optimize with what dependability is a target, through mechanical component probability analysis and dependability analysis emulate the union that wait. Implementation data is mixed interactively automation is compositive optimize an analysis to emulate. Integrated balance mixes function and dependability optimize main consideration the following 3 respects: The effect tendency of ① balance element decides with what lose by force this problem and product object relationship are close, plan to take the kind that builds an analysis to judge element by product type and composite characteristic, build relevant criterion for evaluation or regulation to assist an user to achieve integrated balance. Of element of ② balance evaluation build and the affirmatory survey that authority is worth analyses domestic and international relevant positive result, according to the object of integrated balance and limits, build evaluation element market and its criterion for evaluation or regular demand. The processing logic that uses an expert to hit minute of method and intellectual study technology to build power worth to decide and computational method. ③ optimizes target concern model build face systematic level balance, wait with systematic efficiency and combat readiness serviceability rate for the target, according to systematic function model, dependability model and maintenance model, use emulation method to undertake an analysis. Application of 4 projects example locks up department dependability to design an analysis to be with some space structure exemple, discussed in detail be based on Pro/Engineering, MSC.
Patran, MSC.
Nastran, MSC.
Plan of unifinication of the mechanical dependability design of the CAD/CAE tool such as Adams, analysis. Build some space structure to lock up machine of coefficient model of written characters to design platform through compose, the assembly that finished dimensional structure to lock up the design that fastens component, product and project analyse computation, implementation dependability design, analysis and the CAD/CAE/PDM unifinication that the product manages whole process solve a system. Begin dependability above all qualitative analysis, basically used breakdown mode and influence analysis (FMEA) and fault tree analysis (FTA) technology; is on the foundation of qualitative analysis, undertake mensurable computation and determinism analysis are emulated, here is aimed at mechanical product characteristic, began intensity analysis and kinetic analysis respectively; On the foundation that analyses in determinism next, built PDM compositive frame, combine fictitious prototype technology to begin probability to design an analysis, ; of computation of reliability of the ration that finish is final, combine qualitative analysis and the result that ration analyses, integrated balance undertakes iteration designs an analysis to calculate, finding out dimensional structure to lock up is dependability weak point, gave out to the design is improved and optimize plan, raising dimensional structure to lock up is integral task reliability. If the graph is shown 2 times,design of dependability of department of lock of this space structure analyses technological process. Graph design of dependability of lock of 2 spaces structure analyses flow Nextpage4.
1 three-dimensional build model and the three-dimensional and hypostatic model that design three-dimensional substance to build a model to include all parts, assembly and overall assemble. (The three-dimensional model that 1) three-dimensional substance builds modular component is the base that builds platform of mechanical products plan, design blueprint according to AutoCAD component, the three-dimensional model module that uses Pro/E software comes true. Generated spare parts entity contained the physical information such as the geometrical information of the spare parts and material, precision. The part that makes from this can be calculated by follow-up quality character, activity is interference examination, limited yuan of analysis and structure are optimized, scale of face of kinetic, graph reachs the system make etc working place is common. Normally, build a model to realize parameter easily to change from draft hand, design of standardization, seriation, it is dimensional structure optimal of platform of the design that lock up a department proposes modular way. (After 2) space structure locks up those who fasten a component to build the three-dimensional and hypostatic model that completed all parts, begin to assemble, undertake structural program is decorated, assemble structure of product of join, complete imitate to wait, via interfering examination and analysis, determine final geometry shape. The dimensional structure lock that builds a model to form through the three-dimensional entity that parameter changes fastens component, after some spare parts is revised, in the component the spare parts related to its also gets updating subsequently. (Lock of 3) space structure fastens those who design platform to build CAD is CAE, the foundation of PDM, the implementation that affects succeeding activity directly and undertake. Accordingly, the dimensional structure lock that finishs by CAD fastens component and product model, want to contain geometrical feature information of the high level not just, return the due and complete information that is not geometrical respect, it is the engineering analysis model that can use for CAE. Such, the height that just can realize CAD/CAE/PDM is compositive. Dimensional structure locks up a department to change three-dimensional model, geometry and blame geometry to assemble processing via parameter, the structure between form voidance locks up the design platform of the department. Dimensional structure lock fastens CAD to design platform is the foundation that unifinication solves a system and core. (Lock of 4) space structure fastens those who design parameter database to build dimensional structure to lock up the standardization that fastens component and product, seriation, generalization is to build good space structure to lock up department CAD to design the foundation of platform. Designing the job is plot not just, still need to consult much material, manual, have all sorts of consideration. The electron that must finish all design data changes the job. Namely all design data takes person computer, forming dimensional structure to lock up is design parameter database. Dimensional structure can be being used to lock up in be designed later is platform and design parameter database design of department of lock of structure of the space that finish is improved and optimize a process. Raise the scientific sex of the design, shorten the design is periodic. 4.
Does the project that lock of 2 spaces structure fastens analyse computation (does the project that lock of CAE) space structure fastens analyse computation (does CAE) include: ? Zhan Huan Mao considers to touch that Kang of crime of Tao Mao to treat the Jing that show swing to carry Х of ρ of of ⒍ of large А on the back to treat the play that show swing to gather up about truly Kang flesh fan gnaws a courtyard to carry large fan on the back to gnaw Yuan Zhi to show brandish Jin AE is rising, before can helping a design personnel is built in new product and shape, what develop in the product is inchoate standard of quality of the concerned character that can understand a product, whole, dependability and security, discovery designs medium issue, solve in time. Can shorten time of design, research and development, in reducing process of product research and development, be opposite of physical prototype count level, reduce a product to develop cost. (Analysis of intensity of department of lock of 1) space structure uses MSC with emulation computation.
PATRAN undertakes dimensional structure lock fastens finite Yuan Jianmo, use MSC next.
NASTRAN intensity analysis is emulated. For the effectiveness of result of computation of test and verify, should decide: well and truly? Mao of swiftly Zhan Huan considers stool to guide make structural member of ② of? of ぷ Bian Gao adverse the computational method with the accurate ④ of accurate description; of model of computation of orgnaization of ③ of working place; . Use finite yuan of law, to dimensional structure the lock fastens each component to undertake statics analysis, kinetic analysis. Statics analysis uses the response of the F of statics load action that the structure that seek solution and time have nothing to do, force of the displacement that reachs place needs node, node, unit force, unit stress and meet an emergency. (Lock of 2) space structure fastens kinetic analysis to emulate the foundation that fastens three-dimensional and hypostatic model in dimensional structure lock to go up, still considered three-dimensional substance to give out attrib border tie, motion is restrained and apply treatment to make load wait, ADAMS of software of mechanical and automatic analysis has the mechanical system that uses MSC firm kinetic build model and analysis to emulate, emulation analysis gave dimensional structure to lock up the motion curve of the department, if motion is emulated, the parameter such as athletic contrail, displacement, speed, acceleration, force, moment of force is calculated and interfere an examination, needed once upon a time thereby ability of a few months completes test of overall and hypostatic physics, shorten can finish on the computer. Used disperse body to be opposite among them flexible the rope made successfully building a model to analyse mixing emulate, improved the kinetic analysis efficiency of the rope, and its got project test and verify as a result. 4.
Data of product of department of lock of 3 spaces structure manages (the tool that PDM) PDM is data of product of administration of personnel of help project technology and process of product research and development, it will be all with dimensional structure the information related the product that lock up a department is mixed all processes that concern with the product are compositive together, ensure dog the mass data that design, production place requires and information, support from this and defend a product. The information that with dimensional structure the product that lock up a department concerns includes any data that belong to a product and design variable, if the file of CAD/CAE/PDM, product configures form of file, electron. The clou that unifinication solves a system is to let an user lock up a department to design design of CAD/CAE/PDM of the implementation on platform to analyse whole process in centralized dimensional structure, the ARAMS (mechanical dependability of own development analyses a system automatically) in each module is based on this design platform, have unified interface and unified database, lock of structure of sufficient play space fastens the effect that designs platform, to develop new product, improve old product, shorten products plan cycle, raise product function and dependability to lay next foundations. Parameter of department of dimensional structure lock changes dependability to if pursue,analyse emulation PDM compositive plan 3 are shown. Graph this plan uses record of set prescription of emulation collect of analysis of dependability of lock of 3 spaces structure PDM technology, the mechanical system reliability that ADAMS of compositive UG of 2 Wei Jianmo tool, kinetic emulation tool, finite Yuan Jianmo emulates tool PA-TRAM/NASTRAN and own research and development analyses software ARAMS, OK and convenient implementation the data between each software tool is exchanged and share, formed mechanical product reliability to design analytic unifinication to solve a system, have certain versatility. Nextpage4.
Intensity of department of lock of 4 spaces structure and kinetic dependability analysis are emulated contrast through test data and analysis, on the foundation of the effectiveness that made sure determinism analyses a result, if the graph is shown 4 times,design of dependability of department of dimensional structure lock analyses technological process. Graph dependability of department of lock of 4 spaces structure analyses technological process among them parameter sensitivity analysis is a very important segment, very effective to raising dependability to analyse efficiency, shorten design analysis is periodic, the project that enhances this technology is practical. Above all, through designing parameter sensitivity analysis, affirmatory influence orgnaization sets main parameter of the function, undertake to these parameter key monitoring and design are optimized next. Analysis of dependability of orgnaization of department of dimensional structure lock is on analysis of groovy determinism intensity, kinetic analysis and the foundation that parameter sensitivity analyses, the ARAMS system that uses own development asks a structure into line space the lock fastens orgnaization dependability to analyse emulation computation, reach finally the dependability parameter such as the reliability of user demand. Length of be confined to, in be being hooked with active lock only unusual be out of shape breakdown mode exemple, process of brief specification computation. (1) random variable and its statistic parameter are with locking up a hook actively exemple, according to its structure and job ask, the stretch model quantity of the load outside the choice, material, succumb assimilate to of the limit, intensity limit, Poisson is random variable. Mechanical to locking up a hook function affects temperature very small, because temperature variable is not included in this variable. (Function of 2) set function locks up a hook actively function of unusual metabolic function is G(E, p, r, one F(E of F)=R, p, f) among them, f(E, p, f) is used answer face method compose to build, should answering a face is to pass IDM platform iteration to call finite yuan of software NAST-RAN and ADAMS of software of kinetic emulation analysis are begged piece. (3) calculation method and the computation of spare parts reliability that analyse article analysis as a result need to call exterior and finite yuan with kinetic analysis software, functional function belongs to concealed form function, does adoption algorithm include: ? Admire beats way of ?AMV+) , Monte Carlo (MONTE) and answer cover magic art (RSM) . The computational result of law of theoretic Monte Carlo is most accurate, but the computational resource that drain and emulation time is maximum, especially very tall to reliability spare parts will expend many computational natural resources, the test and verify that can regard a part as the spare parts is algorithmic, but do not suggest to use; to answer cover magic art in great quantities computational efficiency is highest, but the computation that inferior; improves computational precision to all be worth a law is close to Yumengtekaluo to emulate a result most as a result, the computational time that below the case that uses double CPU workstation its expend also can be accepted. Accordingly, the article is recommended use improve all be worth a law to add (AMV+) . (Analysis of 4) probability sensitivity passes probability sensitivity analysis, can find out bigger to invalidation probability influence random variable, offer thereby improve the products plan, optimal way that raises reliability. Graph 5 in, brunet histogram delegate all is worth disturbing sensitivity to analyse a result to random variable, the sensitivity that delegate of light color histogram disturbs to random and variable coefficient of variation analyses a result. Graph hook of 5 active locks is unusual be out of shape the sensitivity of failure mode analyses a result from the graph 5 in can see, of the load outside locking up a hook actively and material succumb the limit belongs to more acute random variable, especially outside the coefficient of variation of load is the biggest to reliability influence, should try to take; Poisson seriously as main factor when the design is improved lesserer than be being affected to invalidation probability, stretch model measures the influence of pair of invalidation probability to have hardly, minor factor can serve as when the design is improved. Use this PDM platform, mode had all pair of automatic and efficient trouble reliability emulation computation and probability sensitivity analysis, improve and raise dimensional structure to locked up department orgnaization dependability to provide a basis. 5 last words (the article put forward 1) to use PDM technology one kind to join a number fictitious prototype technology locks up department orgnaization to undertake reliability analyses calculative method to dimensional structure, solved this method to use medium crucial technology, reduced cost, shorten the design is periodic. (2) faces mechanical product function and dependability PDM to design analytic system integratedly through own research and development, ARAMS, the tool that realized mechanical product function and dependability PDM to design an analysis integratedly is compositive become with data set. (3) fastens dependability to design an analysis through applying at dimensional structure to lock up, test and verify the feasibility of this platform program. Realized machinery to the product is designed in coordination and analyse the unity of the process, be based on fictitious prototype platform, built unified database, shorten products plan development is periodic, lay next foundations to raise the function of the product and dependability. (Program of system of unifinication of 4) this CAD/CAE/PDM realized much discipline in coordination design and analyse in coordination, those who pass a variety of pair of business software is automatic and compositive, realized hypostatic geometry model to build, kinetic analysis, finite yuan of analysis, sensitivity analysis and the data that reliability analyses emulation computation process are compositive, and got the project examines. This system and method can popularize general and mechanical dependability to design an analysis in the process. CNC Milling CNC Machining