Mechanical D Branes and B Fields

We represent B fields and higher p-form potentials on a manifold M as connections on affine bundles over M. We realize D branes on M as special submanifolds of these affine bundles. We check the physical relevance of this representation by showing that the properties of the resulting branes closely correspond to those of their string theory counterparts. As a simple application of this geometric understanding of the B field, we show how to obtain supersymmetry algebra deformations induced by 2 and 3 form potentials.