Scholarlink

<p>The contact stiffness of the joint surface is an important factor that affects the static and dynamic characteristics of mechanical equipment. This research aims to investigate the effect of surface parameters on contact force and stiffness. To this end, a rough surface is reconstructed using ellipsoidal asperities, and a modified model that considers shoulder–shoulder contact, substrate deformation, and asperity interaction is proposed. First, the contact parameters are obtained from the reconstructed surface topography. Second, an asperity–substrate system model and a multiasperity contact model are established. Third, experimental results are generated to validate the effectiveness of the proposed model. Lastly, surface parameters are discussed in relation to contact stiffness, and a pressure–stiffness function is derived through full-factor experiments. Simulation results reveal the influence of distribution function and surface topography on the contact characteristics, providing a theoretical foundation for studying the contact and frictional wear of joint surfaces.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Modified normal contact stiffness model considering substrate deformation and ellipsoidal asperity interaction

  • 期刊论文

  • 发表日期：

    2025年5月30日

查看全文
  • Shusheng Liu,
  • Jun Shi,
  • Jianhong Sun,
  • Song Zhang

摘要

The contact stiffness of the joint surface is an important factor that affects the static and dynamic characteristics of mechanical equipment. This research aims to investigate the effect of surface parameters on contact force and stiffness. To this end, a rough surface is reconstructed using ellipsoidal asperities, and a modified model that considers shoulder–shoulder contact, substrate deformation, and asperity interaction is proposed. First, the contact parameters are obtained from the reconstructed surface topography. Second, an asperity–substrate system model and a multiasperity contact model are established. Third, experimental results are generated to validate the effectiveness of the proposed model. Lastly, surface parameters are discussed in relation to contact stiffness, and a pressure–stiffness function is derived through full-factor experiments. Simulation results reveal the influence of distribution function and surface topography on the contact characteristics, providing a theoretical foundation for studying the contact and frictional wear of joint surfaces.