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对最高转速7 000 r/min的3 N.m.s偏置动量轮轮体综合其静动态特性建立结构优化数学模型,进行优化设计.依据人工材料变密度法,对轮体进行三维静动态拓扑优化,得到趋于4根工字梁辐条结构的概念模型;并提出工字梁与矩形辐条两种模型,采用ANSYS零阶方法分别进行尺寸优化,所得体积均为1.51×10-4m3,但工字梁辐条轮体一阶弹性频率(1 468.0 Hz)高于矩形辐条轮体(1 413.5 Hz),结构更优,进而验证了拓扑优化结果的合理性.研究方法对减小设计质量、降低轮体振动水平等具有借鉴作用.
Based on the static and dynamic characteristics of the 3 Nms bias moment wheel with a maximum rotation speed of 7 000 r / min, a structural optimization mathematical model was established and optimized. According to the variable density method of artificial materials, the wheel was subjected to three-dimensional static and dynamic topological optimization The concept model of four I-beams was approached. Two models of I-beam and rectangular spoke were proposed. The size of each beam was 1.51 × 10-4m3 using ANSYS zero-order method. However, The first-order elastic frequency (1 468.0 Hz) of the wheel body is higher than that of the rectangular spoke wheel body (1 413.5 Hz), and its structure is better, which verifies the rationality of the topology optimization results.Research methods can reduce the design quality and reduce the wheel vibration level And so on for reference.