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Product Overview:
In this tutorial, we explore the simulation of air blast explosions on a Wood-Concrete slab reinforced with Basalt Fiber Reinforced Plastic (BFRP) laminates using Abaqus. The wood-concrete component is modeled as a three-dimensional solid part, while the BFRP is represented as a shell part comprising eight layers. Additionally, the steel reinforcement embedded within the concrete is modeled as a three-dimensional wire part.
Addressing energy and environmental challenges is crucial in the context of sustainable development. Utilizing bio-sourced materials combined with a cementitious matrix presents a viable alternative to conventional construction materials, offering both economic and ecological benefits. Biomaterials such as wood fibers can be derived from recycled timber or sustainably managed forests, making them cost-effective and environmentally friendly.
To model the mechanical behavior of the wood-concrete composite, the Concrete Damage Plasticity Model (CDPM) available in Abaqus is adapted. This model effectively captures the complete inelastic behavior of the wood-concrete material in tension and compression, including the effects of damage. In this analysis, the tensile and compressive stress-strain relationships as well as damage parameters are employed. The steel reinforcement is modeled as a material with elastic and plastic characteristics, while the BFRP laminates are treated as elastic material layers, utilizing Hashin’s damage criterion to assess fiber damage.
For this simulation, a dynamic explicit method is suitable, with the steel reinforcements embedded within the concrete matrix and ideal contact assumed between the BFRP and wood-concrete parts. Fixed boundary conditions are assigned to two edges of the slab, ensuring proper constraints. A refined mesh is essential for achieving accurate results during the blast event.
After completing the simulation, a range of results—including stress, strain, tensile and compressive damage, BFRP damage, and reaction force diagrams—are available for analysis.
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