Dynamic Tensile Response of Caprine Muscles using Split Hopkinson Pressure BarJournal: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) (Vol.10, No. 3)
Publication Date: 2020-06-30
Authors : Somnath H. Kadhane; Hemant N. Warhtakar;
Page : 3665-3678
Keywords : Tensile Loading; SHPB; Strain Rate; Impact & Tissue Behaviour;
Computer modeling and numerical simulation has become an efficient diagnostic tool to predict the human body injuries caused due to high speed automotive impacts, blast and ballistic impacts. Soft tissues such as muscles and skin in human body are exposed to varying strain rates under dynamic loadings during impacts. The prediction of impact-induced injuries requires a thorough understanding of mechanical behaviour of soft tissues for computational modeling of human body. In the present study, uniaxial tensile tests were conducted on caprine lower extremity muscles in thestrain rate range of (500s-1-3500s-1) using custom-made split Hopkinson pressure bar (SHPB) apparatus. The difficulties in the dynamic testing of delicate tissues, for example, estimation of frail transmitted signs, utilization of viscoelastic weight bars, tractable stacking of example and age of consistent strain rate were tended to in powerful elastic testing of delicate tissues utilizing polymeric SHPB. Polymeric bars were utilized in SHPB as impedance is nearer to the delicate tissues to create quality transmitted signs during experimentation. The lessening and scattering in waves in polymeric bar during sway are remedied utilizing segregated occurrence bar tests. The pressure strain results were resolved from the reproduced waves for the tests directed on lower furthest point caprine muscles. The muscle examples were tried along and opposite to the fiber course to examine the directional reliance of tissue conduct. The pressure strain reaction was seen as non-straight and huge dependant on strain rate when tried along and opposite to fiber course at same strain rates. It is additionally seen that at a similar strain rate, the example worry of caprine muscle along the opposite fiber heading is higher than that along the fiber course.The obtained results may further be used to develop finite element human body models and safety systems for human body in high rate scenario.
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