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The study of the stress-strain state in the deformation zone of workpieces made of plastic materials machined through plastic deformation is presented. The stress-strain state of an axisymmetric workpiece made of plastic material was studied by modeling the process of deforming broaching. It is established that in the contact zone, the material of the workpiece is in a state corresponding to volumetric compression, and on the outer surface of the workpiece, the stress state corresponds to biaxial tensionQuery. It is shown that the intensity of deformation is maximum at the inner surface and minimum at the outer surface. It is shown that the deformed state in the deformation zone changes with increasing wall thickness. The ways of optimizing the workpiece shaping scheme have been established, consisting of the technological influence of broaching modes and tool geometry on the axial dimensions of the machined workpiece and allowing changes from shortening to lengthening. This fact can be used in the development of technology for the restoration of worn parts.

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Stress-Strain State During Deforming Broaching of Plastic Materials Workpieces

  • 会议论文

  • 发表日期：

    2025年

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  • Yakiv Nemyrovskyi,
  • Valentyn Otamanskyi,
  • Oleksandr Melnyk,
  • Ihor Shepelenko,
  • Volodymyr Nochvai

摘要

The study of the stress-strain state in the deformation zone of workpieces made of plastic materials machined through plastic deformation is presented. The stress-strain state of an axisymmetric workpiece made of plastic material was studied by modeling the process of deforming broaching. It is established that in the contact zone, the material of the workpiece is in a state corresponding to volumetric compression, and on the outer surface of the workpiece, the stress state corresponds to biaxial tensionQuery. It is shown that the intensity of deformation is maximum at the inner surface and minimum at the outer surface. It is shown that the deformed state in the deformation zone changes with increasing wall thickness. The ways of optimizing the workpiece shaping scheme have been established, consisting of the technological influence of broaching modes and tool geometry on the axial dimensions of the machined workpiece and allowing changes from shortening to lengthening. This fact can be used in the development of technology for the restoration of worn parts.