The shock attenuation characteristics of aqueous methylcellulose (MC) gels were characterized experimentally and modelled towards their application in bodily protection systems against traumatic injury. The attenuation of MC gel with 4 different thicknesses (4, 7, 10 and 20 mm) and 3 concentrations (5, 10 and 15%Wt) was measured, using an instrumented (Hopkinson) bar and piezoresistive sensors for direct force sensing on the gel. First, the impulse attenuation was systematically characterized for all combinations of thickness and composition, and the results were analyzed statistically. The impulse attenuation increases with both thickness and MC concentration. A non-linear function was then fitted to the experimental results. The fitted functions increase monotonically with both the thickness and the concentration of the gel layer. However, the slope of each function decreases gradually with the thickness of the layer, thereby indicating an effective thickness beyond which shock attenuation efficiency does not increase significantly.The frequency dependence of the attenuation was determined next and found to be relatively independent of both thickness and gel concentration up to 100 kHz. A phenomenological expression was developed and validated for the shock attenuation of MC gels as a function of their composition, thickness and spectral content of the shock.

对甲基纤维素水凝胶的减震特性进行了实验表征，并针对其在针对创伤的身体保护系统中的应用进行了建模。使用仪器化的（Hopkinson）棒和压阻传感器，在4种不同厚度（4、7、10和20 mm）和3种浓度（5、10和15％Wt）的条件下，测量MC凝胶的衰减。凝胶。首先，对厚度和成分的所有组合的脉冲衰减进行系统地表征，并对结果进行统计分析。脉冲衰减随厚度和MC浓度的增加而增加。然后将非线性函数拟合到实验结果。拟合功能随凝胶层的厚度和浓度单调增加。然而，每个函数的斜率随层厚度的增加而逐渐减小，从而表明有效厚度不会使冲击衰减效率显着增加。接下来确定衰减的频率依赖性，发现衰减的频率依赖性与厚度和凝胶浓度相对无关高达100 kHz。开发了一种现象学表达，并验证了MC凝胶的冲击衰减与其组成，厚度和冲击光谱含量的关系。接下来确定衰减的频率依赖性，并发现其相对独立于厚度和高达100 kHz的凝胶浓度。开发了一种现象学表达，并验证了MC凝胶的冲击衰减与其组成，厚度和冲击光谱含量的关系。接下来确定衰减的频率依赖性，并发现其相对独立于厚度和高达100 kHz的凝胶浓度。开发了一种现象学表达，并验证了MC凝胶的冲击衰减与其组成，厚度和冲击光谱含量的关系。