DIN Standards Committee Technical Fundamentals
Geometrical product specifications (GPS) - Restrained states
Abstract
This document specifies rules for restrained states. According to the rigid workpiece principle in ISO 8015:2011, all parts are by default considered rigid (i.e. having infinite stiffness) and all GPS specifications apply in a state undeformed by any external forces (in this document referred to as restraining conditions). While the rigid workpiece principle applies well for many industrial cases, it is however inadequate in cases where the deformations (caused by e.g. contact with counterparts, gravity, forces, etc.) are non-negligible with respect to the part's function. In such cases it is beneficial to specify the part in restrained state(s).
Begin
2025-10-23
WI
00290277
Planned document number
DIN EN ISO 25935
Project number
15202970
Responsible national committee
NA 152-03-02 AA - CEN/ISO Geometrical product specifications and verification
Responsible european committee
CEN/TC 290 - Dimensional and geometrical product specification and verification
Responsible international committee
ISO/TC 213/WG 18 - Geometrical tolerancing
