@article { author = {Parsapour, Masoud}, title = {Experimental and Numerical Studies on the Characteristics of Simple and Multi-cell Shapes of Quasi-hemisphere Thin-walled Structures}, journal = {International Journal of Engineering}, volume = {27}, number = {8}, pages = {1307-1316}, year = {2014}, publisher = {Materials and Energy Research Center}, issn = {1025-2495}, eissn = {1735-9244}, doi = {}, abstract = { Thin-walled energy absorbers are used to reduce accident induced damages. In this study, thin-walled stainless steel structures in quasi-hemisphere geometry were subjected under quasi-static loading with Santam 150KN apparatus. Experimental results were compared with results of numerical simulations by LS-DYNA and it was shown that there is a good agreement between experimental and numerical results. Also, the multi-cell quasi-hemisphere specimens were numerically investigated and it was presented that increasing the number of cells increases the absorbed energy. The results showed that Six-cell specimen with the largest diameter and the minimum thickness has the most increase of Specific Absorbed Energy (SAE).}, keywords = {Thin,walled structure,energy absorber,Quasi,hemisphere,multi,cell}, url = {https://www.ije.ir/article_72367.html}, eprint = {https://www.ije.ir/article_72367_ab28d7200e52310eced303cb220118dd.pdf} }