复模态稳态响应虚拟实验平台设计与实现-软件工程专业论文.docxVIP

华中科技大学硕士学位论文 华 中 科 技 大 学 硕 士 学 位 论 文 I I 摘 要 复模态分析和谐波稳态响应的求解在受谐波激励的动力学系统中具有重要意 义。相比无阻尼系统和经典阻尼系统，复模态谐波响应求解系统考虑了非经典阻尼 对实际运动方程的影响，计算结果精度更高，且更贴近实际工程应用中的情况。 介绍了复模态分析和谐波稳态响应的求解算法发展和软件开发的现状，讨论了 实现虚拟实验平台稳态响应求解系统主要用到的软件和开发环境，并重点阐述了 Nastran，Intel MKL，Hoops 与本求解系统开发环境 VS2005 的结合。 分析了系统需要实现的功能模块以及各个模块的算法流程，包括模型显示，模 态综合计算，频响函数计算，稳态响应计算等；介绍了稳态响应求解系统的数据结 构的设计，以及各个模块的详细设计。并基于 Nastran 求解器和 DMAP 二次开发语 言，研制开发并实现了复模态谐波稳态响应求解系统。 最后，通过实例对求解系统进行了测试，并与商业软件 Optistruct 的计算结果进 行对比，验证了系统在求解非经典阻尼系统在受谐波激励的稳态响应时的正确性。 关键词：复模态 稳态响应 虚拟实验平台 系统开发 II II Abstract Complex harmonic responses are of interest in the dynamic analysis of damped mechanical and structural systems subjected to steady-state oscillatory excitation. Complex harmonic response system consider the dynamic equation of motion with the non-classical damping taken into account. So that it’s result has higher accuracy and closer to practical application case compared to non-damped or classical damping system. The development and software development of complex modal analysis and harmonic steady state response are introduced, and discusses the development environment and software needed for implementation of complex steady response analysis virtual test platform, focusing on the conjunction of Nastran, Intel MKL and Hoops with the Visual Studio 2005 development environment. Introduces the needs analysis of modules of the system and algorithmic process of each module, including model display, modal synthesis, frequency response function calculation and complex steady-state response analysis. Introduces the design of data structure of the complex steady-state response analysis module, and the detailed design of each module. Develop and implement the complex steady-state response analysis system based on Nastran solver and DMAP secondary development language. Finally, an example model was tested, and the results of the system were compared with the commercial software Optistruct to verify the correctness of the complex steady-state response an