一种典型冲击试验夹具的优化设计

根据冲击试验夹具的设计要求，以夹具几何参数为设计变量，以试件－夹具连接处的期望响应与实际响应差异最小为目标，建立了优化设计的数学模型，同时规定了几何、强度、刚度、体积等约束条件。然后在ANSYS上建立了有限元模型，采用子问题近似方法进行了动力响应优化求解，获得了合理的优化结果。本文的研究为冲击试验夹具的设计提出了一条新思路。

Optimum Design of a Typical Shock Test Fixture

This paper presents a mathematical model of optimum design for a typical fixture used in shock test on basis of design requirements.In the model,some geometrical parameters are defined as design variables,the minimum difference between anticipant and practical responses of some points jointing the test piece and the fixture is defined as the objective function,and constraints of geometry,volume,strength and rigidity are defined as well.A finite element model is built using ANSYS,and the reasonable results are got by subproblem approximation method.The investigation in this paper shows a new idea for design of fixtures used in shock tests.