<p>螺钉承受轴向拉力F，螺钉头与钢板之间的挤压应力是: <img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/61/a5/61a504e8b8c54108f565b9c14641d485.jpg" style="width: 100%;height: auto;"><img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/96/37/9637981f6c638f02a8cf4ced06b2f1e1.jpg" style="width: 100%;height: auto;"></p>