共查询到19条相似文献,搜索用时 562 毫秒
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在航空机电一体化机箱中,各个元器件的发热会对机箱内部温度场产生影响,而温度场的分布对整个机箱内部元器件的工作性能和可靠性有重要的影响。本文以航空机电一体化机箱为研究对象,应用有限元方法建立机箱热分析模型,运用ANSYS Workbench软件对航空机电一体化机箱进行稳态热分析,得到了机箱实体的温度场分布情况,进而计算出工况1情况下探测器周围的稳态温度为292~298 K,工况2情况下探测器周围的稳态温度为307~318 K,均可满足探测器的工作温度要求。通过机箱的稳态热分析,可以为机箱温度场的预测和机箱内发热元器件结构布局优化提供一定的理论支持。 相似文献
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文中对一体式推床滚轮总成的结构进行了分析,以滚轮总成的结构出发分析了滚轮总成的设计,充分考虑了结构设计的可靠性、对实际工况的适应性,以及现场可维护性。重点分析了结构设计的可靠性,通过有限元数值分析方法,计算了滚轮总成主要受力部件在最恶劣工况下的应力状态,得出了主要受力部件结构强度完全满足最恶劣工况下力学要求的结论。 相似文献
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《机械制造与自动化》2017,(3):96-99
分析了骑行运动和洗衣机工作的各自特性,并结合各自的优点,创新地提出了多功能洗衣机的设计方案。对骑行部分,发电部分,洗衣部分等详细结构的设计思路,效率及可行性做出了论证与阐述。并对传动轴部件做了静态分析,对洗衣机的机箱做了模态分析并结合静态分析和模态分析结果,提出了优化方案。为进一步研究提供了基础。 相似文献
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针对某车型上控制臂在路试工况中发生弯曲变形,在此工况下对该部件进行动态道路载荷谱测试,提取上控制臂动态载荷数据。结合CAE分析表明,上控制臂在路试工况中存在失稳现象。提出上控制臂4种结构优化方案,并对比CAE屈曲分析结果得出优选方案。优化后结构为上控制臂两侧增加翻边且板厚由7mm减至5mm,最后经过路试工况验证,使用效能可靠。 相似文献
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A light?weight design method of integrated structural topology and size co?optimization for the force?performance?structure of complex structural parts is presented in this paper. Firstly, the supporting function of a complex structural part is built to map the force transmission, where the force exerted areas and constraints are considered as connecting structure and the structural configuration, to determine the part performance as well as the force routines. Then the connecting structure design model, aiming to optimize the static and dynamic performances on connection configuration, is developed, and the optimum design of the characteristic parameters is carried out by means of the collaborative optimization method, namely, the integrated structural topology optimization and size optimization. In this design model, the objective is to maximize the connecting stiffness. Based on the relationship between the force and the structural configuration of a part, the optimal force transmission routine that can meet the performance requirements is obtained using the structural topology optimization technology. Accordingly, the light?weight design of conceptual configuration for complex parts under multi?objective and multi?condition can be realized. Finally, based on the proposed collaborative optimization design method, the optimal performance and optimal structure of the complex parts with light weight are realized, and the reasonable structural unit configuration and size charac?teristic parameters are obtained. A bed structure of gantry?type machining center is designed by using the proposed light?weight structure design method in this paper, as an illustrative example. The bed after the design optimization is lighter 8% than original one, and the rail deformation is reduced by 5%. Moreover, the lightweight design of the bed is achieved with enhanced performance to show the effectiveness of the proposed method. 相似文献
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常规线性二次最优控制器在汽车主动悬架应用中,存在权值矩阵确定的问题。设计了一种基于遗传算法优化控制器权值矩阵的方法。利用遗传算法的全局优化算法,以主动悬架性能指标为目标函数对权值矩阵进行优化设计,提高了控制器的设计效率和控制性能。应用该方法进行了汽车悬架主动控制仿真。研究结果表明:基于遗传算法优化的LQG控制器的汽车主动悬架相对于应用常规控制器的主动悬架和被动悬架,能够大大改善主动悬架的性能。同时在充分利用常规线性二次最优控制器优势的基础上,解决了其权值矩阵确定存在的问题。 相似文献
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耐压壳是ROV的重要组成部分,其研究的目的是保证其有足够的强度、稳定性和尽可能小的重量.为了在耐压壳体设计的初期寻求最佳设计方案,本文利用有限元分析工具AnsysWorkbench对一在研ROV的耐压壳体进行了有限元分析及尺寸优化.通过有限元分析及优化结果对比发现,在强度及稳定性满足设计要求的前提下,优化后耐压壳体重量... 相似文献