基于模拟退火结构优化设计毕业论文.docVIP

基于模拟退火的结构优化设计 学生姓名：刘霖 班级：0981013 指导老师：孙士平 摘要：结构优化设计不仅可以降低结构重量和材料成本，而且能够改进结构的强度、剐度、振动特性、屈曲稳定性等性能，是计算力学以及现代设计制造领域的重要研究方向。结构优化方法，大致有优化准则法、数学规划法、混合法、随机有哪些信誉好的足球投注网站法等。其中，遗传算法、模拟退火算法等新的随机有哪些信誉好的足球投注网站方法，在处理全局优化、离散变量、多连通可行区等困难问题中，具有传统结构优化算法不可比拟的优势。虽然它们的计算效率很低，但是在计算机计算速度不断提高的条件下，具有不可低估的发展潜力和重要的研究价值。 在众多学者的不懈努力下，这一领域的研究已经取得了很大的进展，但仍有一些问题值得进一步深入探讨。近年来，高性能复合材料的使用促进了层合板优化设计程序的发展。设计复合材料层合板，得到了广泛的关注。传统的优化方法具有一定的局限性，如需要梯度信息和难以收敛到全局最优解等问题。不依赖于具体问题的直接有哪些信誉好的足球投注网站方法“模拟退火算法近年来备受重视。 本文的研究工作由两部分组成：1．在研究分析基本的模拟退火算法原理 2．在若干类型的结构优化问题中应用本文改进的模拟退火算法，通过算例的数值试验和算法比较表明，模拟退火算法在结构优化的某些困难问题中具有其特点，本文的优化算法是可行和有效的。 关键词：模拟退火算法；复合材料铺层优化；结构优化。 指导老师签名： Structure optimum design based on simulated annealing Student name: Liu Lin class: 0981013 Supervisor: Sun shipin Abstract：Topology optimization is now me most challenging topic in the filed of structural optimization．Topology optimization is that fulling constraint then searching a optimum material distribution in a prescribed design domain or optimal connection of component in a discrete structure．It is a valuable tool for designers since it can provide novel conceptual designs Although a lot of achievements have been made in topology optimization by some scholars，there are still some problems need further discussion．In recently years, the fact of applying composite material and more promotes stacking-sequence optimization developing. The stacking sequence optimization is attended broadly. Tradition optimum methods are restrained, this methods need gradient, convex programming, single peak etc.Simulated annealing algorithm is direct searching optimum solution; it is independency of these idiographic questions. Recently years,lots of experts pay attention to SA. A lot of achievements have been made in topology optimization by some scholars,there are still some problems need further discussion. In recently years, the fact of applying composite material more and more promotes stacking-se