Numerical Investigation of Orientation Effects in Cross-grain Fracture of Wood

Add to your list(s) Download to your calendar using vCal

• Dr Hao Yin, CUED
• Friday 31 January 2025, 14:30-15:00
• Oatley 1 Meeting Room, Department of Engineering.

If you have a question about this talk, please contact div-c.

Previously developed 3D Connector-Beam Lattice Model for Wood (CBL-W) has proved its capability in predicting crack initiation and growth in wood mesoscale cellular structures. Now the CBL -W model has been utilized to investigate the growth-ring orientation effects observed in the compact tension tests of eastern spruce. The numerical investigation involved specimens with a 5-mm precrack loaded at three different end-grain orientations relative to initial crack directions: 0, 45, and 90 degrees. Results showed that cracks followed a straight radial path, due to the earlywood and latewood cell wall tearing, dominant at 0 degree, produced higher energy release than cell wall separation through the earlywood and latewood boundaries before settling once again in an earlywood region, which dominates in 45 and 90 degrees crack propagation. Partial fracture deflection and meandering have been identified as one of the most dominant mechanisms for toughening, observed in the post-peak stages of crack growth.

This talk is part of the Engineering - Mechanics and Materials Seminar Series series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge University Engineering Department Talks
• Cambridge talks
• Centre for Smart Infrastructure & Construction
• Computational Continuum Mechanics Group Seminars
• Engineering - Mechanics and Materials Seminar Series
• Engineering - Mechanics, Materials and Design (Div C) - talks and events
• Featured lists
• Interested Talks
• Lennard-Jones Centre external
• Oatley 1 Meeting Room, Department of Engineering
• School of Technology
• Trust & Technology Initiative - interesting events
• bld31

Note that ex-directory lists are not shown.