A commercially available, three-dimensional finite-element analysis software was used to model the load-displacement
behavior of metal-plate-connected (MPC) joints in wooden trusses. Model features included consideration
of material properties, teeth-to-grain-to-direction-of-force orientation, wood-to-wood interaction, and gaps between wood
members. To simulate wood-to-plate interaction, the main feature of the model, each tooth of...
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A previously developed, three-dimensional (3-D) finite-element (FE) joint model and several two-dimensional
(2-D), beam-element based FE models with different joint-stiffness assumptions (pinned, rigid, and semi-rigid) were used
to analyze the full-scale behavior of a metal-plate-connected (MPC) wood scissors truss. The truss displacement and
force results were investigated for sensitivity with...
Accurate estimation of the amount of water used by trees is important for a variety of agricultural applications. There are several current methodologies for measuring sap flow and water use in trees, however the heat ratio method has been identified as the ideal due to its ability to measure low...
Michigan’s State Department of Education issued a resolution in 2003 calling for all public K-12 schools to repeal their American Indian mascots and in 2013 the Michigan Department of Civil Rights filed a complaint with the United States Department of Education in response to school districts failing to do so....
A plan irregularity rapid visual screening method for seismic performance assessment of
wood-frame, single-family dwellings is presented. Results from 124 samples were compared
with (i) building-specific, non-linear time-history analysis, and (ii) FEMA 154 and ASCE 31
Tier 1. Verification using two houses damaged in the 1994 Northridge Earthquake is
presented....
Theoretical studies and experimental results are presented for the rotational motion of molecule's in crystalline solids. The group theory is solved for molecules of any symmetry matrix isolated at a site in a crystal field of any symmetry. As the potential terrier to rotation of the molecule relative to the...