摘要
为使结构在相同甚至更少质量下获得更大的刚度,并让设计过程更加科学和高效,根据拓扑优化技术利用APDL对ANSYS进行二次开发,并与基准算例比较验证该程序的有效性,实现结构的轻量化设计.将所开发的程序用于C919客机舱门铰链臂结构的最小柔度设计,获得比2种原始设计方案刚度更大的轻质拓扑构型,具有一定的实际参考价值.所开发的程序具有如下优点:适用于低阶单元,极大提升计算效率;可扩展到包括实体单元在内的各种单元类型,如梁、板和壳等,有效增加结构模型的应用范围;引入并实现FILTER技术以避免使用低阶单元优化时出现棋盘格现象;具有针对拓扑优化结果的有特色的后处理模块.
To achieve greater stiffness under the condition of same or less mass and make the design process more scientific and efficient, APDL is used to perform secondary development on ANSYS based on topology optimization technology, the program is validated with a benchmark example, and the structural lightweight design is implemented. The program is applied in the minimum flexibility design of C919 airliner cabin door hinge arm, and a lightweight topology structure is obtained, of which the stiffness is greater than those of two original design schemes. So the program has some actual reference value. The results indicate that the program has the tbllowing advantage： it is applicable for lower order elements and the computation efficiency is improved greatly; beside the solid elements, other different types of structural elements such as beam, plate and shell elements etc. can also be employed for topology optimization, and the application scope of the structural model is greatly extended; the FILTER technology is implemented to elements; it has a distinctive avoid checkerboard phenomenon in the optimization using lower order post-processing model for topology optimization results
出处
《计算机辅助工程》
2013年第1期10-15,共6页
Computer Aided Engineering
基金
国家自然科学基金(90816025
10672087)
中国商用飞机有限责任公司大飞机专项基金
