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基于观测的主应力方位资料，应用遗传有限单元法对巴西及邻区边界位移和板内力源进行了反演，确认了前人的研究结果：板块边界作用是控制区域应力场的主要因素，山脉和海岸地形造成的扩展力是控制应力场的一个重要因素．同时显示了板块在垂直载荷下的弯曲对局部水平应力场造成相当的影响．反演结果也表明，除了过去公认的东西向挤压作用外，巴西还受到相当明显的南北向构造作用．它的存在与最近ＧＰＳ资料的分析是一致的．研究还表明遗传有限单元法是偏微分方程反演问题求解的一种有效方法．
Based on the observed principal stress and azimuth data, the boundary-displacement and intraplate internal force sources in Brazil and its adjacent areas were retrieved by genetic finite element method. The results of previous studies confirm that the plate boundary function is the main factor controlling the regional stress field, And the expansion of the coastal terrain is an important factor in controlling the stress field. At the same time, it is shown that the bending of the plate under vertical load has a considerable impact on the local horizontal stress field. Inversion results also show that, in addition to the previously recognized east-west squeeze, Brazil is also subject to a rather pronounced north-south tectonism. Its presence is consistent with recent GPS data analysis. The research also shows that the genetic finite element method is an effective method to solve the inverse differential equations.