STTR Phase I: Compressible Magnetorheological Fluids

小型企业技术转移研究(STTR)第一阶段项目将展示开发可压缩磁流变(CMR)流体的可行性。磁流变液由悬浮在载体流体中的可磁化颗粒组成。流体的压缩是在外力作用下测量到的体积变化。当用于陆地车辆悬挂系统的阻尼器(或减震器)时，CMR流体将能够同时提供可控的减振和弹簧效果。可控阻尼来自于流体(在磁场作用下)的粘度变化。因此，在车辆悬架中，含有CMR流体的减振器既可以代替常规的被动减振器，也可以代替弹簧。这将减轻重量，增加车辆运动的机动性和可控性；并将防止翻车，特别是在崎岖的地形中。在拟议的工作中，所开发的CMR流体还将在流变性和可压缩性方面进行表征。除了汽车的悬架系统外，CMR流体还可用于越野车、摩托车、军用高有效载荷地面车辆、高速列车和后坐系统。拟议的项目还将为研究生提供多学科的培训，包括化学、材料和热力学。

The Small Business Technology Transfer Research (STTR) Phase I project will demonstrate the feasibility of developing a compressible magnetorheological (CMR) fluid. Magnetorheological fluids consist of magnetizable particles suspended in a carrier fluid. The compression of a fluid is the measured change of volume from an applied external force. The CMR fluid, when used in a damper (or a shock absorber) for the suspension system of land vehicles, will be able to simultaneously provide controllable damping and spring effects. The controllable damping comes from the viscosity change (under a magnetic field) of the fluids. Therefore, a damper that contains CMR fluid can replace both the regular passive damper and the spring in the suspension of vehicles. This will result in reduction of weight, increased mobility and controllability of the vehicle's motion; and will prevent roll over, particularly in rough terrains. In the proposed work, the CMR fluids developed will also be characterized in terms of rheological behavior and compressibility.In addition to suspension systems of automobiles, the CMR fluid may be used in off-road vehicles, motorcycles, military high-payload ground vehicles, high speed trains, and recoil systems. The proposed project will also provide graduate students training in multi-disciplinary subjects including chemistry, materials and thermodynamics.