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A new kind of material cast polyurethane elastomers (CPUE) is introduced to take the place of rubber on load-bearing wheel for the first time. Based on load-bearing wheel dimensions, material properties and operat-ing conditions, the structure of wheel flange is optimized by zero-order finite element method. A detailed three-di-mensional finite element model of flange of load-bearing wheel is developed and utilized to optimize structure of wheel flange. Its service life, which is affected by flange structure parameter, is analyzed by comparing the opti-mization results with those of prototype of wheel. The results of optimization are presented and the stress field of loar-bearing wheel in optimal dimension obtained by using finite element analysis method is demonstrated. The fi-nite element analysis and optimization results show that the CPUE load-bearing wheel is feasible and suitable for the tracked vehicle and has a guiding value in practice of the weighting design of the whole tracked vehicle. 相似文献
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负重轮轮盘结构优化减重分析 总被引:1,自引:0,他引:1
建立了负重轮有限元结构优化模型,并进行了试验验证。在对优化算法进行分析的基础上,以计算结果中表示负重轮轮盘刚度和强度的应力值与变形量为约束条件,把负重轮轮盘重量设为目标函数,对负重轮进行了有效的结构优化,使负重轮的受力状况得到显著改善,且重量减轻10%以上,从而为工程中进行其他优化分析提供了理论与实践参考依据。 相似文献
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实心轮胎动接触问题是轮胎力学领域里的新课题,本文提出了Lagrangian乘子与对称罚函数法的结合算法,并以某履带车辆实心轮胎为例,应用该方法对其进行了动接触的有限元力学分析,获得了实心轮胎稳态滚动的应力场及接触变形情况.有限元计算结果表明该算法可以有效分析实心轮胎的动接触问题,而且对其结构优化、材料选择以及疲劳寿命预估等研究都具有一定的指导意义. 相似文献
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1 CastPolyurethaneElastomersLoad BearingWheel Asmacromolecularsyntheticmaterial,castpolyurethaneelastomers (CPUE)hasboththehighhardnessofplasticandhighdutyelasticityofrubber .Ithasgoodabrasionresistance ,hightearstrength ,greatextensibility ,widehardness ,butalso goodshockabsorption property ,lowhysteresisand greatcarryingcapacity .ThecarryingcapacityofCPUEtireis 6 - 7timesthatofthesamesizerubbertire[1,2 ] .Asoneofthekeypartsoftransmission ,load bearingwheelsnotonlysupportthewholewei… 相似文献
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