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圆柱形螺旋弹簧被汽车广泛采用,对圆柱形螺旋弹簧的设计参数、性能参数及几何参数计算的一般原理和方法进行介绍。利用动力学分析软件ADAMS创建悬架模型,得到螺旋弹簧的设计参数,包括设计载荷、设计高度、上止点和下止点高度,并由相关计算式得到弹簧刚度;之后通过迭代计算得到螺旋弹簧的主要几何参数,包括线径、中径、有效圈数、总圈数。对所设计的弹簧进行了试验验证以及底盘调校,并以某车型螺旋弹簧的应用为例说明其匹配过程。 相似文献
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在已有的普通悬架螺旋弹簧设计系统的基础上,以减振器侧向力作为侧载螺旋弹簧的设计目标,应用有限元方法进行结构优化设计。利用C++ Builder编程工具,借助有限元软件,将此优化算法程序化。自动生成ABAQUS有限元模型。包括六面体网格自动生成、边界条件自动施加等,并通过后台调用ABAQUS求解器完成侧载螺旋弹簧的有限元分析。同时系统还能够进行侧载弹簧的精确建模,实现了侧载弹簧的优化设计。 相似文献
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逆向设计的关键流程有点云数据的采集、点云数据的预处理和逆向建模。本文主要是使用逆向设计技术对汽车零部件转子式机油泵壳体(下文简称壳体)的逆向建模。其具体的设计流程是先分析点云数据的采集方式,然后利用实验室的三维扫描设备来确定具体需要使用什么样的采集方式,并采用杭州先临三维科技股份有限公司生产的Shining3D-Scanner双目型三维扫描仪来采集壳体的三维点云数据,然后利用逆向软件Geomagic Wrap来初步处理采集到的点云数据,其中需要处理的部分包括去除体外孤点、减少噪声、删除钉状物、填充孔洞、网格松弛和去除特征等,最后使用逆向软件Geomagic Design X对经过预处理的三角面片模型进行曲面重构(逆向建模)并得到重构的壳体的实体模型。 相似文献
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奥迪100轿车后螺旋弹簧的可靠性设计 总被引:6,自引:0,他引:6
本文介绍了奥迪100桥车后螺旋弹簧的可靠性设计方法。在基本随机变量的概率特性已知的情况下,使用二阶矩技术对弹簧的可靠性进行设计,所编制的计算机程序可以迅速准确地得到弹簧的可靠性设计参数。 相似文献
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运用虚功原理导出了悬架受力、弹簧刚度与悬架刚度之间、阻尼器参数与系统阻尼之间的非线性函数关系。开发了简单实用的双横臂-螺旋弹簧独立悬架仿真分析与设计软件,应用于某微型电动汽车的悬架系统设计。利用ADAMS建立双横臂悬架模型,通过仿真验证了公式及其结论的正确性。 相似文献
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由PLC电控系统控制的H160/25液压卷耳机是在引进英国FB公司的卷耳机样品的基础上发展的经有手动和半自动两种工作方式。该机的工作原理是将加热的弹簧钢板绕芯轴卷制,从而形成卷耳或包耳。该机是一机多用,它集切头-卷耳-成型于一体,可卷制平耳,垂耳及包耳。 相似文献
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Undesired lateral force inevitably exists in a MacPherson suspension system, which is liable to damper rod’s side wear and
promotes the damper’s inner friction decreasing the ride performance from the suspension system. Substituting a new side load
spring with curved centerline for the conventional coil spring has been proven able to solve these problems and Multi-body
Dynamics combining with Finite Elements Analysis may be an efficient method in optimizing its design. Therefore, taking a
passenger car as example, a detailed multi-body dynamics model for the suspension system is built to simulate forces exerted
on the damper and the minimization of its lateral component is selected as the design target for the spring. When the structure
optimization of the side load spring is performed using FEA software ANSYS, its vertical and lateral elastic characteristics,
supported by test data, are analyzed. After importing FEA results back to the suspension system, the dynamics simulation can
be performed to validate the optimization result. 相似文献
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S. J. Lee 《International Journal of Automotive Technology》2010,11(4):471-479
The analytical model of an air spring can be effectively used for the design of air spring equipped vehicles to provide better
ride and handling characteristics along with various functions for passenger convenience. However, establishing a general
model of an air spring poses particular difficulties due to the severe nonlinearities in the stiffness and the hysteresis
effects, which are hardly observed in conventional coil springs. The purpose of this study is to develop a general analytic
model of an air spring — one which represents the main characteristics of stiffness and hysteresis and which can be connected
to a model of pneumatic systems desigined to control air spring height. To this end, the mathematical model was established
on the basis of thermodynamics with the assumptions that the thermodynamic parameters do not vary with the position inside
the air spring, that the air has the ideal gas property, and that the kinetic and potential energies of the air are negligible.
The analysis of the model has revealed that the stiffness is affected by the volume variation, the heat transfer, and the
variation of the air mass and the effective area. However, the hysteresis is mainly affected by the heat transfer and the
variation of the effective area. In particular, it was revealed that the increase of the volume due to the cross-sectional
area increases the stiffness, while the increase of the volume due to the other reason decreases it. In addition, the model
was used to develop the sufficient stability condition, and the stability of the model was analyzed. The paper also presents
the comparison between the simulation and experimental results to validate the established model and demonstrates the potential
of the model to be usefully employed for the development of the air spring and its algorithm for use in a pneumatic system. 相似文献
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