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对87个冷弯薄壁不锈钢单剪螺栓连接进行了分析。采用瞬态试验方法对试件进行测试。试件由以下3种不同等级的不锈钢制成:奥氏体不锈钢EN 1.4301(AISI 304)、EN 1.4571(AISI 316Ti,含少量钛),以及节约型双相不锈钢EN 1.4162(AISI S32101)。在室温下的3种不同荷载水平(分别为破坏荷载的25%、50%、75%)进行了研究。采用瞬态试验得到的不锈钢单剪螺栓连接的强度减小趋势,与由稳态试验方法得到的结果类似。然而,室温下荷载水平为破坏荷载的25%和50%时,瞬态试验得到的临界温度略高于稳态试验。瞬态试验得到的奥氏体不锈钢EN 1.4571(AISI316TI)的临界温度高于其他两种不锈钢。瞬态试验主要出现以下两种破坏模式:承压破坏和净截面拉伸破坏。荷载水平为破坏荷载的25%时,瞬态试验的失效模式与稳态试验相一致。
87 cold-formed thin-walled stainless steel single-shear bolt connections were analyzed. The transient test method to test the specimen. Specimens are made of three different grades of stainless steel: austenitic stainless steel EN 1.4301 (AISI 304), EN 1.4571 (AISI 316Ti with a small amount of titanium), and economized duplex stainless steel EN 1.4162 (AISI S32101). Three different loading levels at room temperature (25%, 50%, 75% of the breaking load, respectively) were studied. The tendency of strength reduction of stainless steel single-shear bolts obtained by transient test is similar to that obtained by steady-state test. However, when the load level is 25% and 50% of the destructive load at room temperature, the critical temperature obtained by the transient test is slightly higher than the steady state test. Austenitic stainless steel EN 1.4571 (AISI 316TI) obtained by transient test has a higher critical temperature than the other two stainless steels. Transient tests mainly show the following two failure modes: pressure failure and net section tensile failure. When the load level is 25% of the breaking load, the failure mode of the transient test is consistent with the steady state test.