Research on Material Strength Test of Pinus Sylvestris var. Mongolica Wood Supporting Adapted to LS-DYNA Programme
1. College of Civil Engineering, Tongji University, Shanghai 200092, China
2. Engineering Seismic Research Center, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150001, China
3. College of Engineering Technology, Jilin Agriculture University, Changchun 130118, China
| Abstract: | Emergency Rescue Wooden Supports (ERWS) play a crucial role in preventing secondary collapse of severely damaged or partially collapsed structures. However, research on the mechanical properties of localized ERWS materials in China remains insufficient. This study focuses on Pinus sylvestris wood, commonly used in emergency rescue operations in China, to determine the mechanical parameters for the MAT_WOOD_PINE material model in LS-DYNA. First, tensile, compressive, and shear strength tests were conducted to obtain the fundamental mechanical parameters required for the MAT_WOOD_PINE model. Subsequently, a standard compressive specimen model was established in LS-DYNA to derive its stress-strain curve, which was validated against existing experimental results. A two-dimensional ERWS structural model was then developed, subjected to a uniform vertical load, and its maximum vertical load-bearing capacity was analyzed and compared with test results. The findings indicate that the derived strength parameters of Pinus sylvestriswood effectively validate the accuracy and reliability of the MAT_WOOD_PINE model in LS-DYNA. Furthermore, the failure modes of the two-dimensional ERWS model closely align with existing experimental observations, confirming the reasonableness of the simulation results. The peak load-bearing capacity obtained provides a scientific reference for the design and application of ERWS in practical emergency rescue scenarios, offering strong technical support for engineering rescue operations. |
| Keywords: | Emergency Rescue Wood Supports; Pinus Sylvestris var. Mongolica; Material Strength Test; LS-DYNA Program; MAT_WOOD_PIN Model |
| DOI: | 10.57237/j.cear.2024.04.002 |
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Received: 26 November 2024
Accepted: 20 December 2024
Published Online: 9 January 2025
Funding
| 1. | 吉林省教育厅-科学技术项目 (No. JJKH20240423KJ) |
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