Energy absorbing cab guards for logging trucks
WorkSafeBC guidelines (2015) require cab guards on log trucks to withstand horizontal forces equal to 40% of the cargo weight. This study aims to evaluate the performance of an existing cab guard and explore potential modifications to improve its structural integrity when impacted by logs. An analysis of the current design revealed that at a deceleration of 32.5 m/s², the existing cab guard experienced stresses exceeding the yield limits in the foot and gusset. Several design modifications were tested, including increasing the foot height, gusset thickness, and material yield strength, as well as adding energy-absorbing material. Results showed that increasing foot height reduced stress on the foot but increased stress on the gusset. Adding an energy-absorbing pad improved overall performance, reducing stress on both components. The study recommends combining these modifications — higher foot height, gusset stiffener, and energy-absorbing material — for optimal performance and improved safety.
Principal Applicant: | Ron Corbeil (Safety Advisory Foundation for Education and Research) |
Co-Applicant: | Kevin Lyons (Oregon State University) |
Funding Awarded: | $42,474 (Innovation at Work) |