一种用于测量鱼体材料粘弹性性质的弯曲变形试验机  

On a Bending Test Machine used to Measure Viscoelastic Properties of Fish Material

作　　者：王拓道[1] 贾来兵[1] 尹协振[1] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230027

出　　处：《实验力学》2011年第4期397-403,共7页Journal of Experimental Mechanics

基　　金：国家自然科学基金项目(10832010;11002138);中科院知识创新工程重要研究方向项目(KJCX2-YW-L05);中国博士后基金(20090460733);王宽诚博士后工作奖励基金;中央高校基本科研业务费专项资金资助

摘　　要：研究生物材料力学性质是生物力学的重要内容之一。测量材料粘弹性性质的传统方法是单轴拉伸松弛或蠕变实验。与传统方法不同,为了测量鱼体材料粘弹性性质,本文设计了一种用于测量鱼体材料性质的弯曲变形试验机,通过模拟鱼体摆动,可以测得鱼体材料的储能模量、耗散模量、滞后相位角等参数。通过弹性体(铜片)和粘弹性体(橡胶)材料实验验证了该试验机的可靠性,并对鱼鳍进行了实验,计算出鱼鳍的粘弹性性质的各个参数。实验结果表明,实验测试系统可靠而且简单实用。Mechanical property investigation of biological materials is one of the important branches of biomechanics. Traditionally, the uniaxial tensile test, relaxation or creep, are often used to study the viscoelastic properties of material. However, in order to measure the viscoelastic properties of fish material, a bending test machine was designed and its application is presented in this paper. Fish swing raovement can be simulated based on this machine, angular displacement curve and moment of experimental samples were measured and then the storage modulus, loss modulus and phase angle of hysteresis were obtained. Experiment of elastic （copper） and viscoelastic （rubber） specimens was carried out to verify the reliability of this testing machine. Finally, experiment of fish fin was carried out and the parameters of its viscoelastic properties was obtained. Experimental results show that this test system is reliable, simple and practical.

关 键 词：粘弹性材料 试验机设计 鱼 储能模量 耗散模量 

分 类 号：O345[理学—固体力学] Q66[理学—力学]