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  5. 請問有人會算這題嗎
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請問有人會算這題嗎

二、退火處理的低碳鋼鋼板厚度為3mm, 現在利用沖壓模具剪斷一甜甜圈形狀外徑為 15mm,內徑為 5mm 的料件,若荷重-伸長 量圖形如表2所示,請求出低碳鋼鋼板的剪 力強度。 荷重(kg) | 伸長量(mm) 400 800 1200 1600 2000 2400 2800 3200 3600 4000 3800 3000 2800 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.52 0.525 0.53(斷裂)
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