Ashrafi - Department of Mechanical Engineering of Agricultural Machines, Shiraz University , Shiraz, Iran
Hematyan - Department of Mechanical Engineering , Shiraz University , Shiraz, Iran

Special type boundary elements are discussed which can be used for the modeling of surface where extended infinity (half-space). The theoretical background and details of implementation are discussed . the decay function for stress analysis is then developed based on the theoretical displacement reduction away. From the source of loading . effective order-adaptive criteria are used for numerical integration of the integrals over the infinite boundary elements. On numerical example, a practical application for the use these elements to modeling of rectangular foundation is provided.

Infinite boundary elements , Half-space problems , Numerical integration