复杂环境中手机电磁辐射的比吸收率计算

针对如何精确、高效地计算复杂环境中手机电磁辐射比吸收率的问题,开展了有限元区域分解方法及其对于非周期结构目标的求解方法研究。结合有限元区域分解与并行计算技术,给出了一种分析手机辐射情况下人体局部比吸收率的高效方法。通过计算复杂分层人头模型,与商业软件进行对比,验证了该方法的正确性与计算效率。最后,将这种方法应用于车载环境中人头局部比吸收率仿真分析中,有限元求解网格量突破1000万,表明了该方法的计算能力。

Calculations of the specific absorption ratio from mobile phone electromagnetic radiations in complex environment

Aiming at the problem how to accurately and efficiently calculate the specific absorption ratio (SAR) from the mobile phone electromagnetic radiations in complex environment, the finite element domain decomposition method (DDM) and its solution method for aperiodic targets are studied. By combining the finite element DDM with the parallel computing technology, an efficient method for analyzing the local SAR of the human body under mobile phone radiations is given. By calculating the complex hierarchical head model and comparing with commercial software, the correctness and computational efficiency of this method are verified. Finally, this method is applied to calculate the local SAR of the human head in vehicle environment, and the number of FEM meshes exceeds 10million, which shows the ability of the method.