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文中基于OptiStruct软件对某项目汽车控制臂进行了拓扑优化设计,并分别对比了三个载荷工况下,控制臂优化前和优化后的应力和位移。结果表明,拓扑优化后的控制臂的应力在3个工况下都略有增大,但应力值远远小于铸钢材料的屈服极限(650 MPa);拓扑优化后的控制臂的位移在3个工况下都略有增大,但均小于1 mm。这说明,通过OptiStruct软件进行的拓扑优化设计满足结构的强度要求。同时,控制臂结构的重量减轻了35%,实现了轻量化的性能需求,这对汽车零部件产品的设计具有一定的参考意义。 相似文献
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赵杰 《工业仪表与自动化装置》1982,(3)
波纹管是测压用弹性元件之一,广泛地应用于各个技术领域。在工业仪表与自动化装置范围内,常被用作位移式或力平衡式仪表中的感压元件,制成压力、温度、流量、液面等指示、记录、调节仪表或压力变送器、传感器之类。在实际应用中,对所用的波纹管除要进行在内压或轴向力作用下的轴向位移或牵引力的计算外,多数情况下则是在波纹管的轴向位移和几何尺寸已知时,计算它的刚度和应力,以 相似文献
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In a recent paper, the Ritz method with simple algebraic polynomials as trial functions was used to obtain an eigenvalue equation for the free vibration of a class of homogeneous solids with cavities. The method presented is here extended to the study of a class of non-homogeneous solids, in which each solid is composed of a number of isotropic layers with different material properties. The Cartesian coordinate system is used to describe the geometry of the solid which is modelled by means of a segment bounded by the yz, zx and xy orthogonal coordinate planes and by two curved surfaces which are defined by fairly general polynomial expressions in the coordinates x, y and z. The surface representing the interface between two material layers in the solid is also described by a polynomial expression in the coordinates x, y and z. In order to demonstrate the accuracy of the approach, natural frequencies are given for both a two- and three-layered spherical shell and for a homogeneous hollow cylinder, as computed using the present approach, and are compared with those obtained using an exact solution. Results are then given for a number of two- and three-layered cylinders and, to demonstrate the versatility of the approach, natural frequencies are given for a five-layered cantilevered beam with a central circular hole as well as for a number of composite solids of more general shape. 相似文献
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设计了磨粉机快辊轴承座的加工工艺和具体的工装夹具.利用卧式加工中心加工磨粉机快辊轴承座,辅以能够高效快速夹紧的夹具,既可以保证加工精度,又能够提高加工效率. 相似文献
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通过分析膨胀套在实际使用产生滑移受阻现象、卡死现象原因的实质,并在分析产生问题原因的基础上提出了改进措施即:增加导向机构。 相似文献
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本文以某些积算和双笔记录仪产品为例说明由于仪表功能设计的不合理或选型不当,影响了仪表的正常使用,制造厂和用户应关注这类问题。 相似文献
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一种涡旋压缩机径向随变机构的设计 总被引:1,自引:0,他引:1
详细介绍了运用随变原理设计的一种新型径向密封机构的结构特点,工作原理及主要参数的确定方法,该机构可补偿由于涡旋体加工精度不高而造成的功率损失,适用于涡旋压缩机的批量生产。 相似文献
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Modern methods of implementation of the rule of positive gradient of mechanical properties are considered; this rule was formulated by I.V. Kragelskii and its application serves to minimize the friction and wear of solids. The given methods include the application of coatings with the method of finishing antifricton abrasion-free treatment; application of new metal-cladding lubricating materials; and creation of a nanostructural state of the surface iron nitride layer by nitriding steel with a positive gradient of hardness normal to the surface. 相似文献
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铣削图形自动编程系统的研究 总被引:2,自引:0,他引:2
介绍了一种铣削图形自动编程系统。该系统以Win2000为平台,以VC6.0为开发工具,以DXF形式读取用Auto-CAD绘制的零件图或工艺图,经过工艺分析和处理,自动生成NC代码,并进行仿真加工。 相似文献