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Topology optimization lends an effective tool for lightweight work of machine tools. With variable density algorithm, the mathematical model of optimization was given. After structural analysis, analyzing model for topology optimization, with practical machine tool structure, was built. The method of choices of optimization variables and constraints were related. Based on optimizing calculation, the...
Based on its elemental idea, superelement method was introduced to structure simulation of large frame pallet. With superelement method, dynamic analysis uses superelement degree of freedom, and characteristics of mechanics, geometry, material and position information of each component will be considered in calculation. Through an analyzing example, solving results with two different methods were...
In product design process, assembly quality consideration will help to find design flaws and improve product performance. Effective assessment of assembly quality under working condition can give useful information for design modification to designer. Impact assessment system and assessing criteria were first built, and then predictive assessment method for assembly quality was given. After classifying...
Above 70 percent of production cost is determined by development and test phase. Modern simulation method can be used to simulate test process and substitute prototype manufacturing and test phase when finishing design proposal. Test simulation can effectively find design flaws and provide engineer direct reference to modify original design or remodel. Based on practical example of mobile phone, preparation...
Measuring instrument becomes more and more compact, which makes miniature precision elastic components-key parts of these instruments-very difficult to manufacture and measure. In measuring process, small pure torque loading is always needed to investigate torsion and hysteresis property of measured object. A loading method for small pure torque was proposed. The loading system is composed of elastic...
Starting with principles of neural network and genetic algorithm, new approach, combining genetic algorithm and neural network, of structure optimization were given. Structure optimum target function and design variables set were defined, and with learning algorithm of neural network, non-linear global mapping relationship, between design parameters such as weight, stress, displacement and etc., was...
The immense competitive pressure by global competition in the machine tool industry forces the companies to enlarge their efforts in respect to innovations, which is bond with the production of complex and high-tech products. In the meantime the shortening of a product's life cycle leads to the condition that companies are to focus on their service offers in order to ensure an advantage in competition...
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