A Finite Element Analysis of Bearing Resistance of Timber Loaded through a Steel Plate
Abstract: Decrease projected
length of bolts due to bending deformation in timber joints compresses the
steel washers onto timber member and increases lateral resistance of the
joints. As this lateral strength increase primarily depend on bearing
characteristics of timber beneath the steel washers, a finite element analysis
was performed to predict their bearing-embedment behavior. A 3-D finite element
model consisting of 8-node solid and contact pair elements was developed using
ANSYS assuming an anisotropic plasticity model for timber and an
elastic-perfectly plastic model for the washers. Material constants for both
steel washer and timber member were obtained from previous test data. The
results of the analysis were in good agreement with the experimental load-embedment
curves as well as the analytical curves obtained in a previous study based on a
rigid-body-spring-model. The same approach was also used to evaluate the
effective bearing length (under uniform compression) of a 50 mm depth timber
block partially compressed.
Keywords: Bearing resistance,
contact condition, effective bearing length, finite element model, partial
compression
Author: Awaludin A., Hirai T.,
Hayashikawa T., Leijten A.J.M.
Journal Code: jptsipilgg120015
