Dynamic constitutive relation of structural steel under combined effects of blast and fire - 文章详情页

作者：

Yan, S. (Yan, S..) | Xin, Z. (Xin, Z..) | Qi, B. (Qi, B..) | Yang, L. (Yang, L..) (学者：杨璐) | Yan, H. (Yan, H..)

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摘要：

Based　on　the　experimental　and　simulation　results　as　well　as　other　research　results,　the　dynamic　constitutive　relation　of　structural　steel　under　combined　effects　of　blast　and　fire　were　studied　and　strain　rate　level　and　temperature　range　were　re-classified.　A　modified　rheological　constitutive　model　of　structural　steel　was　established　on　the　basis　of　Perzyna　constitutive　model　and　Johnson-Cook　constitutive　model,　considering　the　relationship　between　Z(scaled　distance)　and　strain　rate,　temperature　and　fire　time.　Furthermore,　the　parameters　of　constitutive　model　were　obtained　by　curve　fitting　method.　It　shows　that　the　developed　model　can　good　describe　combinational　reflects　of　high　temperature　thermal　effect　and　high　strain　rate　effect　of　structural　steel.　Meanwhile　the　computing　time　can　also　be　saved.

关键词：

Blasting; Combination; Constitutive model; Fire; Johnson-cook; Perzyna

作者机构：

[ 1 ] [Yan, S.]School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110168, China
[ 2 ] [Yan, S.]Jiansu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou, 221116, China
[ 3 ] [Yan, S.]State Key Laboratory of Explosion Science and Technology, Beijing University of Technology, Beijing, 100081, China
[ 4 ] [Xin, Z.]Chinese Northeast Architectural Design and Research Institute Co. Ltd., Shenyang, 110003, China
[ 5 ] [Qi, B.]School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110168, China
[ 6 ] [Yang, L.]School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110168, China
[ 7 ] [Yan, H.]Liaoning Electric Power Survey and Design Institute, Shenyang, 110179, China

通讯作者信息：

[Yan, S.]School of Civil Engineering, Shenyang Jianzhu UniversityChina

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