共查询到20条相似文献,搜索用时 15 毫秒
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根据QD系列桥式起重机箱形主梁的结构特点,介绍了基于SolidWorks平台的箱形主梁三维参数化设计方法,并实现了箱形主梁与有限元分析软件ANSYS之间的程序接口。对于设计人员来说,具有一定的参考价值和现实意义。 相似文献
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接触应力是不易检测、难于计算,但对于设计又是非常重要的一个难题.尝试用ANSYS中的接触单元对汽轮机中叶片与叶轮的接触强度进行详尽的分析,同时探讨了与迭代计算收敛性及计算结果可靠性有关的几个难点和要点问题.该三维接触有限元分析方法也可用于其它机械产品的接触强度分析,为机械产品由单个零件的强度分析提升到装配体的强度分析提供参考. 相似文献
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基于质量限制的全钢活塞三维有限元分析 总被引:1,自引:0,他引:1
为满足发动机向高功率密度(HPD)方向发展的需要,设计了一种新型全钢活塞,利用有限元软件MSC.NASTRAN对其进行热负荷、机械负荷以及热负荷和机械负荷共同作用下的分析计算,并与传统铝活塞在重量上进行了对比,为全钢活塞的结构分析和改进提供了参考。 相似文献
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叉车是应用十分广泛的流动式物料搬运机械 ,叉车门架包括门内架和门外架。工作时 ,起升液压缸使内架在外架内移动 ,内架通过货叉架带动货物上下移动。内架材料一般采用厚翼缘薄腹异性槽钢 ,属于主要承重件之一 ,因此分析其微观受力及位移很有意义。本文说明了内架的三维模型构造方法 ,分析了内架工作状态的受力及约束情况 ,并将这些参数作用于三维模型模拟其工作状态。通过ANSYS有限元分析软件可以分析得到内架各微观部分的应力、应变、力矩等详细数据 ,以及其三维形状受力物体变形前后的直观图形。这种分析方法既能降低零件设计成本、缩… 相似文献
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以螺旋输送机理论为基础,设计了一种等厚分层连续出料螺杆,介绍了其设计方法,通过理论分析推导出其参数变化规律;并借助大型有限元分析软件ANSYS进行线性静力学分析,验证了其结构强度的安全性,并根据其位移响应修正了其间隙设计参数,为后续的改进和优化提供了参考和借鉴。 相似文献
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Three-dimensional finite element stress and strain analysis of a transfemoral osseointegration implant 总被引:5,自引:0,他引:5
Xu W Xu DH Crocombe AD 《Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine》2006,220(6):661-670
The percutaneous transfemoral osseointegration implant is an alternative technique for direct prosthetic limb attachment. In order to investigate the stress and strain in the transfemoral osseointegration implant system, finite element (FE) analyses were carried out using three-dimensional femur-implant models and the commercial FE software ABAQUS. The three-dimensional femoral model was reconstructed from presurgery CT scans of an above-knee amputee. The implant was then inserted into the femoral model using Boolean operations in CAD software. Under a typical walking load, stress and strain from the femur-implant FE model were investigated. Stress concentrations were found near to the distal and proximal regions of the femur. To study the effect of different contact ratios between femur and implant, FE analyses were carried out using different implant diameters. The results showed that there were local stress variations near the contact discontinuity areas. A comparison was also made between the results of this study and a previous study using axisymmetric FE models. The results of the two studies revealed different stress levels, but good correlation was found in the overall stress distribution. 相似文献
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基于参数化的叉车转向桥三维有限元分析系统 总被引:1,自引:0,他引:1
我国作为一个发展中国家,叉车使用越来越多。而当前由于设计方案所限,不能精确地选择零部件的尺寸和结构,造成有的地方强度不够,而有的地方强度又过剩,严重地影响了产品的开发和设计,造成直接经济损失。特别对于诸如转向桥等部件,因不能准确确定其失效原因和部位,造成不能从根本上解决其失效问题。 相似文献
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Hongling Li Yude Dong Changliang Chen Chao Chen 《Journal of Mechanical Science and Technology》2021,35(1):79-89
Journal of Mechanical Science and Technology - Neck injuries caused by low-speed rear-end collisions are a worldwide problem. The reasonable design of car seat can effectively prevent or reduce the... 相似文献
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Leung SY Browne M New AM 《Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine》2008,222(1):145-149
Tetrahedral finite element meshes with smooth surfaces can be created from computed tomography scans of cancellous bone in order to evaluate its mechanical properties. Image processing before creation of the mesh can affect the accuracy of determined mechanical properties. For a cancellous bone analogue, threshold, mesh density and surface smoothing parameters used in mesh generation were varied and the mechanical properties predicted by the resulting meshes were compared to experimental results. This study has shown that threshold selection is vital for accurate determination of volume fraction and resulting mechanical properties. 相似文献