一种复杂板壳厚度的优化设计方法

Optimum Design Method for Thickness of Complex Shells

针对工程中复杂板壳结构由于复杂性而无法采用板壳理论进行厚度设计的问题,提出一种基于有限元理论的板壳厚度优化设计方法。结合板壳理论和有限元理论建立了复杂板壳厚度优化设计的数学模型,并提出基于ANSYS的板壳厚度快速优化设计实现方法;分析了载荷、约束和复杂性对设计精度的影响。结果表明,此方法能够适用于复杂载荷、不同约束类型、不同载荷类型和复杂结构模型。最后,利用优化设计实例进行了验证,结果验证了该设计方法的有效性和可行性。

The theory of plates and shells is not adapted to design thickness of shell structure in engineering due to complexity. An optimum design method based on the finite element method is presented. Firstly, a mathematical model based on the theory of plates and shells and the finite element method is established, and then an optimum design method for thickness of complex shells based on ANSYS is proposed. Furthermore, the influences of the load, constraint and complexity on the design error are analyzed; the analysis results indicate that the proposed method can be applied to the complex loads, different constraint types, different load types and complex structural model. Finally, an optimal design example is illustrated, which demonstrates that the proposed design method is effective and feasible.