新型钢结构作业棚抗冲击性能有限元分析
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摘要
开发了一种新型钢结构作业棚,并应用ABAQUS软件中的ABAQUS/Explicit显示分析模块建立了22个有限元模型,对其抗冲击性能进行有限元分析,分别考察了高空坠物的高度、作用面积、木材厚度对钢结构作业棚结构体系的影响。分析结果表明:结构体系受到冲击后,主要以防护层木材的变形损伤与剪切破坏为主,钢结构构件的变形相对较小并且不会达到屈服状态;当坠落物体作用面积较大、木材较厚时,木材吸收的冲击能量越多,可承受冲击能力越强,结构越安全;当坠落物体高度较大时,冲击能量越大,可承受冲击能力越小,结构越危险。
A new steel structure work shed was proposed,22 finite element models were established by ABAQUS/Explicit display analysis module to study its impact resistance,and the influences of the height of falling objects,impact area,wood thickness were investigated. The analysis results showed that the damage and shear failure of the wood of the protective layer were common and the deformation of the steel component was relatively small and did not reach the yield after the structural system was impacted. When the impact area of the falling objects and the wood thickness were larger,the more inpact energy absorbed by wood,the larger the impact resistance could be,and the safer the structure was. When the height of the falling objects was higher,the impact energy was larger,the impact resistance was smaller,and the structure was more dangerous.
A new steel structure work shed was proposed,22 finite element models were established by ABAQUS/Explicit display analysis module to study its impact resistance,and the influences of the height of falling objects,impact area,wood thickness were investigated. The analysis results showed that the damage and shear failure of the wood of the protective layer were common and the deformation of the steel component was relatively small and did not reach the yield after the structural system was impacted. When the impact area of the falling objects and the wood thickness were larger,the more inpact energy absorbed by wood,the larger the impact resistance could be,and the safer the structure was. When the height of the falling objects was higher,the impact energy was larger,the impact resistance was smaller,and the structure was more dangerous.
引文
[1]沈祖炎,罗金辉,李元齐.以钢结构建筑为抓手推动建筑行业绿色化、工业化、信息化协调发展[J].建筑钢结构进展,2016,18(2):1-6.
[2]窦金龙,汪旭光,刘云川.杨木的动态力学性能[J].爆炸与冲击,2008,28(4):367-371.
[3]杨亮庆.有限元法在木材振动特性中的应用研究[D].哈尔滨:东北林业大学,2008.
[4]邵卓平.木材和竹材的断裂与损伤[D].合肥:安徽农业大学,2009.
[5]张秋实,李树森,谷志新,等.基于ABAQUS的木材侵彻性能的仿真研究[J].中南林业科技大学学报,2014,34(1):125-128.
[6]李树森,马文龙,曾剑锋,等.基于ABAQUS的木材顺纹动态压缩仿真实验[J].中南林业科技大学学报,2013,33(4):102-105.
[7]张磊.螺栓连接节点梁柱子结构抗冲击性能研究[D].长沙:湖南大学,2013.
[8]朱正西.钢框架梁柱组合节点动态抗冲击性能研究[D].长沙:湖南大学,2014.
[9]SYMONDS P S.Survey of Method of Analysis for Plastic Deformation of Structures Under Dynamic Loading[R].Providence:Brown University,1967.
[10]JONES N.Structural Impact[M].Cambridge,U.K:Cambridge U-niversity Press,1997.
[11]孙国军.C型冷弯薄壁钢构件的静、动态畸变屈曲机理研究[D].宁波:宁波大学,2015.
[12]李林峰.梁柱式木结构框架抗火数值模拟研究[D].南京:东南大学,2014.
[13]YAMADA S E,SUN C T.Analysis of Laminate Strength and Its Distribution[J].Composite Materials,1978,12:275-284.
[14]CARMEN S.Mechanical Behavior of Timber Joints with Slotted-In Steel Plates[D].Duitsland:Universitat Karlsruhe(TH),2012.
[2]窦金龙,汪旭光,刘云川.杨木的动态力学性能[J].爆炸与冲击,2008,28(4):367-371.
[3]杨亮庆.有限元法在木材振动特性中的应用研究[D].哈尔滨:东北林业大学,2008.
[4]邵卓平.木材和竹材的断裂与损伤[D].合肥:安徽农业大学,2009.
[5]张秋实,李树森,谷志新,等.基于ABAQUS的木材侵彻性能的仿真研究[J].中南林业科技大学学报,2014,34(1):125-128.
[6]李树森,马文龙,曾剑锋,等.基于ABAQUS的木材顺纹动态压缩仿真实验[J].中南林业科技大学学报,2013,33(4):102-105.
[7]张磊.螺栓连接节点梁柱子结构抗冲击性能研究[D].长沙:湖南大学,2013.
[8]朱正西.钢框架梁柱组合节点动态抗冲击性能研究[D].长沙:湖南大学,2014.
[9]SYMONDS P S.Survey of Method of Analysis for Plastic Deformation of Structures Under Dynamic Loading[R].Providence:Brown University,1967.
[10]JONES N.Structural Impact[M].Cambridge,U.K:Cambridge U-niversity Press,1997.
[11]孙国军.C型冷弯薄壁钢构件的静、动态畸变屈曲机理研究[D].宁波:宁波大学,2015.
[12]李林峰.梁柱式木结构框架抗火数值模拟研究[D].南京:东南大学,2014.
[13]YAMADA S E,SUN C T.Analysis of Laminate Strength and Its Distribution[J].Composite Materials,1978,12:275-284.
[14]CARMEN S.Mechanical Behavior of Timber Joints with Slotted-In Steel Plates[D].Duitsland:Universitat Karlsruhe(TH),2012.
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