Impact Behaviour Of Bio-Inspired Sandwich Beam With Varying Core Geometries

• Main Author: Siaw, Yang Yew
• Format: Final Year Project Report
• Language: English; English
• Published: Universiti Malaysia Sarawak, (UNIMAS) 2020
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://ir.unimas.my/id/eprint/37088/1/Siaw%20Yang%20%2824pgs%29.pdf; http://ir.unimas.my/id/eprint/37088/2/Siaw%20Yang%20%28fulltext%29.pdf; http://ir.unimas.my/id/eprint/37088/

Impact resistance efficiencies of the bio-inspired sandwich beam (BHSB) with varying solid hot melt adhesive (HMA) hyoid core thicknesses and leg spans were examined under the impact energy of 7.28J at the mid-span of the sandwich beam. The sandwich beam models consist of dual-core comprising solid hot melt adhesive (HMA) and aluminum honeycomb cores sandwiched between the top and bottom carbon fiber reinforced plastic (CFRP) skins. The HMA core was designed with an arch shape. Considered HMA hyoid thicknesses include 3 mm, 4.574 mm, and 10 mm with various leg spans of 10 mm, 25 mm, and 35 mm. The finite element software, ABAQUS, was used to construct the BHSB models in examining the impact behaviors of these models. Assessed performances include displacemtmt-time,. velocity-time, acceleration-time, impact energy-time, and stress contour distribution. Then, the impact resistance efficiency index was used to determine the overall performance of all the BHSB models. In conclusion, the BHSB with HMA hyoid thickness of 4.574 mm and a hyoid leg span of to mm is the most superior in terms of impact resistance efficiency index among all the proposed sandwich beam models as it has the highest impact resistance efficiency index of 25.53.