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标 题： A Comparison Between the EN 383 and ASTM D5764 Test Methods for Dowel-Bearing Strength Assessment of Wood: Experimental and Numerical Investigations
木材销钉承载强度评估中EN 383与ASTM D5764试验方法的比较：实验与数值研究
作 者： C. L. Santos
A. M. P. de Jesus
J. J. L. Morals
J. L. P. C. Lousada
关键词： Dowel type connections  [销轴式连接]
Embedding tests  [ 嵌入测试]
Finite element method  [ 有限元法]
Pine wood  [ 松木]
出版年： 2010
期刊名： Strain
焦虑
年卷期： 2010, vol.46, no.2
摘 要： The purpose of this paper is to provide a comparison between embedding tests covered by the EN383 and ASTM D5764 standards, highlighting some difficulties regarding the application of the referred standards. These embedding tests are essential to evaluate the embedding strength of wood, which is required for the assessment of joints strength. The proposed comparison is based either on experimental data and numerical simulations through the finite element (FE) method. Tests were performed on maritime pine wood (Pinus pinaster Ait. species) according to the longitudinal and radial directions, allowing the comparison of the embedding strength and elastic: foundation modulus. Three dimensional FE models of the tests were built using contact elements technology and assuming the steel dowel and wood as linear elastic isotropic and orthotropic materials, respectively. The contact modelling is a challenging topic for which this paper also proposes some guidance. The test configuration proposed in the EN383 standard for assessment of the embedment strength in compression is more susceptible to the dowel bending than the half-hole test configuration proposed in the ASTM D5764 standard. The numerical simulation of the EN383 embedding test raises some additional difficulties regarding the dowel boundary conditions.

本文旨在对EN383和ASTM D5764标准所涵盖的嵌入试验进行比较，重点分析这些标准在实际应用中存在的一些困难。此类嵌入试验对于评估木材的嵌入强度至关重要，而木材的嵌入强度是判断接头强度的基础。本研究通过实验数据和有限元（FE）方法的数值模拟，提出了相关对比分析。试验在 maritime pine 木材（Pinus pinaster Ait.. 种类）上分别沿纵向和径向方向进行，以比较其嵌入强度与弹性模量及基底模量。利用接触单元技术构建了三维有限元模型，假设钢制螺栓和木材分别为线性弹性各向同性和各向异性材料。接触建模是一个具有挑战性的问题，本文也为此提出了一些指导建议。根据EN383标准提出的压缩嵌入强度测试配置，相较于ASTM D5764标准中推荐的半孔测试配置，更容易受到螺栓弯曲的影响。EN383嵌入试验的数值模拟在销钉边界条件方面提出了一些额外的困难。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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