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<p>Longitudinal edge strain (LES) considerably affects the forming quality of asymmetric corrugated channels (ACCs) during roll forming. Thus, the bending strain (BS) of commonly used seven-slot ACCs is first studied through finite element analysis. Its maximum value is found at the left corner of channel 3, and the magnitude and location of this peak BS remain the same with the number of channels. Then, the LES of three-slot ACCs is explored to improve research efficiency, and the influence of key forming parameters is considered. Simulation results show that the LES is most prominent at the fifth pass during the roll forming of the narrow channel 3, and its distribution is uneven on both sides of the ACCs but is located on the outer edge of channel 3. Among the four parameters, the influence of roll station distance and yield strength on the LES is more remarkable, while the friction coefficient and fillet radius impact are less. Finally, the accuracy of the simulation data is verified through experiments.</p>

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Longitudinal edge strain behavior in roll-forming asymmetric corrugated channels

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Yingying Ma,
  • Xu Zong,
  • Hao Zheng,
  • Chuntian Xu,
  • Zihuimin Wang

摘要

Longitudinal edge strain (LES) considerably affects the forming quality of asymmetric corrugated channels (ACCs) during roll forming. Thus, the bending strain (BS) of commonly used seven-slot ACCs is first studied through finite element analysis. Its maximum value is found at the left corner of channel 3, and the magnitude and location of this peak BS remain the same with the number of channels. Then, the LES of three-slot ACCs is explored to improve research efficiency, and the influence of key forming parameters is considered. Simulation results show that the LES is most prominent at the fifth pass during the roll forming of the narrow channel 3, and its distribution is uneven on both sides of the ACCs but is located on the outer edge of channel 3. Among the four parameters, the influence of roll station distance and yield strength on the LES is more remarkable, while the friction coefficient and fillet radius impact are less. Finally, the accuracy of the simulation data is verified through experiments.