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English Translations » 【设计及技术圈】 » 【Daily Question】Theoretical Foundation 2020.03.21

【Daily Question】Theoretical Foundation 2020.03.21

2020-03-22 View Original

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Multiple-choice question: To punch a circular hole in a steel plate of thickness t using a punch press, the magnitude of the punching force is ( ). (A) Proportional to the square of the diameter of the circular hole (B) Proportional to the square root of the diameter of the circular hole (C) Proportional to the diameter of the circular hole (D) Proportional to the cube of the diameter of the circular hole. Answer: C. Hint: An additional reward will be given to those who can explain the solution process; the answer can be found in the response!
Reply #2 2020-03-22
(C) is proportional to the diameter of the circular hole

Translated at 2026-07-21 03:22:29

Original: https://bbs.hcbbs.com/thread-2941749-1-1.html

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