【摘要】 用轻质材料替代一直是缩减轮毂质量、实现轮毂轻量化的一种有效方法.镁合金以其优越的性能和广阔的应用前景而成为当前替代材料的首选.为探索不同材料性能对服役应力的深层影响,在摩托车铝合金轮毂结构基础上,应用有限单元法对替代后的镁合金轮毂进行应力分析.并与相同服役状态下铝合金轮毂的分析结果进行对比.结果表明:轮毂材料用镁合金替代后,应力分布变得均匀,交变应力峰值变化趋于平缓,为今后轮毂结构再设计提供了力学依据.更多还原

【Abstract】 Reducing wheel mass by replacement of higher density materials with lower ones is always an effective way of making wheel lighter.Mg-alloy with superior properties and wide application outlook makes itself the first replacement material.In order to research influences of different material properties on service stress,service stress of wheel replaced with Mg alloy was analyzed with finite element method(FEM) on the basis of Al-alloy wheel structure analyzed before.The both analysis results under the same service conditions were compared.It was demonstrated that wheel stress distribution became more ideal,stress curve trended to be more uniform by replacement of Al alloy with Mg alloy and mechanics evidence of wheel structural redesign was offered in the future.更多还原