Jianzhu Gangjiegou Jinzhan, 2021 在钢管柱柱壁和内置H形钢翼缘上设置带有螺纹的螺栓孔,来替代传统梁柱端板连接中高强螺栓的螺母。将高强螺栓直接拧紧在螺纹孔上,可实现钢管柱-钢梁节点的单边连接,简化安装过程。采用有限元方法研究了带有内置H形钢的螺纹锚固单边螺栓端板连接钢管柱-钢梁节点的破坏模式和承载力,并分析了钢管柱柱壁厚度、内置加强H形钢翼缘厚度和高强螺栓直径对节点受力性能的影响。分析结果表明:内置H形钢翼缘板上螺栓孔内的螺纹增大了螺栓孔对高强螺栓的锚固,有效地避免节点发生螺栓拔出破坏;当螺纹所在钢板的厚度大于螺栓直径时 ...
周生展 +8 more
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Effect of precipitates on the austenite grain growth of titanium microalloyed high performance steel [PDF]
, 2016 An austenite grain growth model was established by analyzing the quantificational relationship between precipitates and austenite grain size. The austenite grain size of Ti microalloyed steel with the interaction of TiN and TiC panicles was calculated by
KANG Yong-lin +3 more
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Jianzhu Gangjiegou Jinzhan, 2022 对304D奥氏体和TSZ410铁素体不锈钢进行了高温过火冷却后的力学性能试验研究，得到了高温过火冷却后不锈钢材料的弹性模量、名义屈服强度、抗拉强度、断后伸长率等主要力学性能指标，并将试验结果与已有同类试验结果进行对比。结果表明，两种不锈钢在不同过火温度和冷却方式（自然冷却、浸水冷却）下有不同的外观特征，过火温度高于400 ℃时，TSZ410铁素体不锈钢试件表面颜色均比304D奥氏体不锈钢要深；高温过火冷却对304D奥氏体不锈钢的屈服强度有一定的影响，对其弹性模量、极限强度和断后伸长率的影响不大 ...
陶宇超 +4 more
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A micromechanically motivated uncoupled model for ductile fracture prediction [PDF]
, 2017 This paper is a contribution to the ductile fracture prediction by the proposal of a new uncoupled ductile fracture criterion. In the new criterion, two typical void deformation models were carefully considered, with the plastic strain increment regarded
Araujo Stemler Pedro Malaquias +2 more
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Microstructure and mechanical properties of Nb-Ti micro-alloy hot stamping steels [PDF]
, 2017 The microstructure of Nb-Ti micro-alloy hot stamping steels was observed and investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The toughness and tear properties were investigated by Kahn tear test.
DAI Si-yu +4 more
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Evaluation of residual stress and its influence on fracture performance of Q690 thick plate butt welded joint [PDF]
ObjectiveThis study aims to investigate the complex welding residual stress of high-strength steel thick plate with multi-pass welding, and examines the influence of such stress on the fracture behavior of welded joints.
Hongquan ZHAO +6 more
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Characteristics of the as-cast high-carbon microalloyed continuous casting bloom steel for expansion-break connecting rods [PDF]
, 2022 Expansion-break connecting rods are high-end products for automotive precision transmission. They need to have high strength, high toughness, and brittle cleavage fracture characteristics during cracking processing.
Hai-yan TANG +6 more
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Mechanism analysis of cutting distortion of thin plate with high tensile strength steel for its prediction and control [PDF]
ObjectiveIn order to effectively control flame cutting precision of thin plate with high tensile strength steel, Generation mechanism of out-of-plane buckling distortion and in-plane bending distortion were investigated, and processing with dynamic ...
Hongquan ZHAO +6 more
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Influence of vanadium on the microstructure refinement of high strength automobile beam steel [PDF]
, 2016 The effects of vanadium on the microstructure refinement of automobile beam steel with a yield strength of 700 MPa were investigated by Gleeble-3500 Thermo Simulator, scanning electron microscopy, transmission electron microscopy and electron back ...
HE Yu-tian +5 more
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Mechanical behavior and stability control of regenerated roof in long wall stratified mining of thick steeply dipping coal seam [PDF]
, 2023 This study focused on the stability control of roof in long wall stratified mining of large dip angle thick coal seam. Taking Panbei Coal Mine in Huainan as an example, the effect mechanism of water content, compression ratio and grain size grading on ...
Ke YANG +3 more
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