Abstract
This paper describes modification method which satisfies the design conditions such as strength. In the past study, we proposed a system for deriving diverse solutions which has two processes. We generated diverse forms in the first process and derived diverse solutions by structure optimization to each forms in the second process. In structural design, evaluation items such as mechanical characteristics are the important factors, and solutions which satisfy the value of evaluation items become applicable solution. The diversity of applicable solutions decreases comparing with derived all solutions. Most of solutions which are not applicable are geometrically novel in form characteristic. It can be inferred that if we can modify these forms to applicable solutions, the diversity of applicable solutions would increase. Therefore, we propose a modification method which satisfies the evaluation standard by increasing and decreasing elements and apply the method to not applicable solutions and possibility of increasing the diversity of solutions is shown by using this method.
