This thesis studies the effect of geometric stiffness on structure finding in homopolymers. The basis for the research is an isolated, off-lattice and coarse grained homopolymer chain. The stiffness variation is achieved by the bond length parameter variation. The Stochastic Approximation Monte-Carlo (SAMC) method is used to iteratively determine the logarithm of the density of states ln[g(E)], which leads to a direct access to the thermodynamics of the system. Applying the microcanonical and canonical analysis, state diagrams were created for two different chain lengths. For interpretation of the pseudotransition lines of the state diagram, morphological chain properties were used. For this purpose, spatial expansion and distances, as well as contact matrices, angle correlations and the curvature behaviour were evaluated. In addition to the stiffness, the resulting effects of an additional specific interaction potential were investigated.