Selection of Variable Restraining Force Trajectory via Numerical Modeling Case Western Reserve Univ

Format:

Conference/Event

Author/Creator:

Saran, Michael J., author.

Conference Name:

International Body Engineering Conference & Exposition (1999-09-28 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Recent advances in press and die building have provided the capability of restraining force (RF) variation during a sheet stamping stroke. Even though the commercial presses with VRF capabilities are now available, the full benefits cannot be attained because, for complex industrial stampings, it is difficult to select the VRF trajectory which will improve the stamping quality or achieve even more complex task of arriving at the desired design target. In this paper we demonstrate how numerical modeling can be used to select a proper VRF trajectory to achieve a postulated design target. The working numerical model using explicit LS-Dyna 3D code was successfully developed for time effective simulation of complex parts with variable binder force. Three case studies with the specific design targets of 1) springback, 2) punch force, and 3) maximum strain are presented and discussed. The results show strong nonlinear influence. This indicates the need for further work to develop more advanced predictive approaches capable of establishing robust and optimal trajectories for individual complex industrial stamping designs

Notes:

Vendor supplied data

Publisher Number:

1999-01-3227

Access Restriction:

Restricted for use by site license