Introduction

ISO 10303 is an International Standard for the computer-interpretable representation of product information and for the exchange of product data. The objective is to provide a neutral mechanism capable of describing products throughout their life cycle. This mechanism is suitable not only for neutral file exchange, but also as a basis for implementing and sharing product databases, and as a basis for retention and archiving.

Major subdivisions of this part of ISO 10303 are:

• kinematic_property_schema;
• kinematic_topology_schema;
• kinematic_structure_schema;
• kinematic_state_schema;
• kinematic_motion_representation_schema;
• kinematic_analysis_control_and_result_schema.

This part of ISO 10303 specifies an information model for the kinematic aspects of a mechanical product as required for the communication between CAD systems and kinematic analysis systems, and among dissimilar kinematic analysis systems. Kinematic information in the context of this part of ISO 10303 may be used in:

• early design stages, where detailed component shape is yet undetermined. The purpose of the kinematic description in these stages is to develop the conceptual model of the mechanical product to understand its motion characteristics;
• detail design stage where detailed shapes of components are determined. The purpose of the kinematic description in that stage is to verify the performance of the kinematic characteristics of a mechanical product using the final shape of its components, e.g., by means of collision checking.

The kinematic structure in this part of ISO 10303 is composed of rigid components related by kinematic pairs along a surface, on a curve, or at a point.

The kinematic structure schema defines the kinematic structure of rigid objects in terms of links, pairs, and joints. A link is the rigid part of a kinematic object. A pair represents the geometric aspects of the kinematic constraints of motion of these objects, and a joint represents the topological aspects of these constraints. The kinematic structures are represented by graphs in which the vertices of the graph correspond to the links, and the edges of the graph correspond to the joints.

The kinematic motion representation schema specifies the motion of a mechanical product by using a parametric path definition.

The kinematic analysis control and result schema specifies configurations of kinematic structures and the interpolation between configurations. This schema describes prescribed paths for a kinematic analysis and paths resulting from such a kinematic analysis.

The relationships of the schemas in this part of ISO 10303 to other schemas that define the integrated resources of ISO 10303 are illustrated in Figure 1 using the EXPRESS-G notation. EXPRESS-G is defined in ISO 10303-11.

The schemas illustrated in Figure 1 are components of the integrated resources.

• Figure 1 — The main relationships between the schemas of ISO 10303-105 and schemas of other parts of ISO 10303

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