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首页> 外文期刊>Engineering Fracture Mechanics >A path independent energy integral approach for analytical fracture strength of steel-concrete structures with an account of interface effects
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A path independent energy integral approach for analytical fracture strength of steel-concrete structures with an account of interface effects

机译：钢混凝土结构分析骨折强度的路径独立能量整体方法，界面效应

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摘要

In this work, an analytical model based on a control volume approach is developed for predicting fracture strength of steel-concrete (SC) structures with an account of SC interfaces. The approach is based on the Rice's path independent J-Integral to relate the interface level strain energy release rate (SERR) to interface traction and slip parameters. An expression for the Crack Tip Opening Displacement (CTOD) is derived with an account of plasticity effects and tension softening or hardening behavior at crack tips lying at the SC interfaces. Numerical simulations using ABAQUSTM are performed based on the analytical equation to predict fracture resistance of different test geometries with SC interfaces. Numerical approximations are shown to closely correspond to the experimental measurements.
机译：在这项工作中，开发了一种基于控制体积方法的分析模型，用于预测钢混凝土（SC）结构的断裂强度，借鉴SC接口。 该方法基于大米路径独立的J-Integral，以将接口电平应变能量释放速率（SERR）与接口牵引和滑移参数相关联。 裂纹尖端打开位移（CTOD）的表达式推导出具有在SC接口的裂纹尖端处的可塑性效应和张力软化或硬化行为的陈述。 基于分析方程来执行使用ABAQUSTM的数值模拟，以预测不同试验几何与SC接口的裂缝阻力。 显示数值近似度与实验测量相对应。

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