1螺纹牙强度校核自动计算

有两个地方有变动。1、压盖处的螺钉因空间问题M16改为M12，抱箍处的内六角螺钉因强度问题M16改为了M20顶丝或压盖螺钉强度校核意义螺纹材料屈服强度许用剪应力许用弯应力螺杆许用应力剪应力系数弯应力系数螺杆许用应力螺纹所受剪应力符号σs[τ][σb][σ]nτnbστ单位MPaMPaMPaMPaMPaMPa235.0058.7578.3358.754.003.00外螺纹安全安全安全6.794.8537.678.66钢级API标准内控标准H40≥414414≥276≤551276551J55≥517517≥379≤551379551抗拉强度极限公称K55≥655655≥379≤551379551sb/MPaminN80≥689689≥551≤758551758屈服强度极限公称P110≥862862≥758≤965758965ss/MPamin45520275最小数值（热处理）--机械设计布氏硬度HBmin65Mn73543020Cr43021540Cr59034542CrMo108093035CrMo5903903045202050Cr18Ni9316L480177316L520205Q235370-500185-235注水接头螺纹强度校核材料N80推荐材料推荐材料弯应力安全系数剪应力安全系数螺栓、螺钉、螺柱相配合螺母螺杆强度结论性能级别请选择螺纹种类剪应力结论弯应力结论抗拉强度屈服强度（Mpa）API标准内控标准意义螺纹材料屈服强度许用剪应力许用弯应力螺杆许用应力剪应力系数弯应力系数螺杆许用应力螺纹所受剪应力符号σs[τ][σb][σ]nτnbστ单位MPaMPaMPaMPaMPaMPa551.00137.75183.674.003.00外螺纹安全安全2.341.1358.94顶丝的螺杆强度校核意义螺纹材料屈服强度许用剪应力许用弯应力螺杆许用应力剪应力系数弯应力系数螺杆许用应力螺纹所受剪应力符号σs[τ][σb][σ]nτnbστ单位MPaMPaMPaMPaMPaMPa340.0085.00113.3385.004.003.00外螺纹安全安全安全9.824.3838.108.66抱箍的螺杆强度校核意义螺纹材料屈服强度许用剪应力许用弯应力螺杆许用应力剪应力系数弯应力系数螺杆许用应力螺纹所受剪应力符号σs[τ][σb][σ]nτnbστ单位MPaMPaMPaMPaMPaMPa1100.00275.00366.67275.004.003.00外螺纹安全安全不安全3.811.70317.5272.143-5弯应力安全系数弯应力安全系数弯应力安全系数剪应力安全系数剪应力安全系数剪应力安全系数弯应力结论弯应力结论弯应力结论螺杆强度结论螺杆强度结论螺杆强度结论请选择螺纹种类请选择螺纹种类请选择螺纹种类剪应力结论剪应力结论剪应力结论有两个地方有变动。1、压盖处的螺钉因空间问题M16改为M12，抱箍处的内六角螺钉因强度问题M16改为了M20螺纹所受弯应力最大轴向外载荷载荷不均匀系数螺纹公称直径螺纹牙根直径螺纹螺距螺纹牙根部宽度有效齿数牙高σbFkzDD或d1pbZhMPaNmmmmmmmmmm16.166000.000.5616.0014.381.501.3121.000.818.88.8(≤M16)(＞M16)3006008008009001000120033040042050052060080083090010401220180240320300400480640640720900108019024034030042048064066072094011009010911313414018123224826931236510151025153540Cr30CrMnSiQ215Q235Q21535Q2354515MnVB15MnVB4或54或54或55568或98或99101210101010101540Cr30CrMnSiQ215Q215Q215Q215Q215Q21515MnVB15MnVB9.83510.912.96.845353535353.64.6性能级别4005004.85.65.8螺纹所受弯应力最大轴向外载荷载荷不均匀系数螺纹公称直径螺纹牙根直径螺纹螺距螺纹牙根部宽度有效齿数牙高σbFkzDD或d1pbZhMPaNmmmmmmmmmm162.60200000.000.5672.0070.381.501.3121.001.20螺纹所受弯应力最大轴向外载荷载荷不均匀系数螺纹公称直径螺纹牙根直径螺纹螺距螺纹牙根部宽度有效齿数牙高σbFkzDD或d1pbZhMPaNmmmmmmmmmm25.856000.000.5616.0014.381.501.3121.001.30螺纹所受弯应力最大轴向外载荷载荷不均匀系数螺纹公称直径螺纹牙根直径螺纹螺距螺纹牙根部宽度有效齿数牙高σbFkzDD或d1pbZhMPaNmmmmmmmmmm215.4250000.000.5616.0014.381.501.3121.001.30