Abstract: A computer-aided design (CAD) system and corresponding method enable users to manage and share information related to a three-dimensional (3D) context of a 3D CAD model with ease. The method creates a 3D-link targeting the 3D context. The 3D-link includes a static link and a variable link. The static link re-directs to the variable link in response to a user opening the 3D-link. The variable link enables (i) the 3D CAD model to be located and opened and (ii) the 3D context to be displayed within the 3D CAD model. The method stores the 3D-link in a database. The 3D-link enables the 3D context to be shared between or among users via sharing of the 3D-link from the database. The 3D-link plays an important role in helping design engineers collaborate by eliminating the need to create pictures or copies of 3D models that may become outdated.

Abstract: A computer-aided design (CAD) system and corresponding method enable users to manage and share information related to a three-dimensional (3D) context of a 3D CAD model with ease. The method creates a 3D-link targeting the 3D context. The 3D-link includes a static link and a variable link. The static link re-directs to the variable link in response to a user opening the 3D-link. The variable link enables (i) the 3D CAD model to be located and opened and (ii) the 3D context to be displayed within the 3D CAD model. The method stores the 3D-link in a database. The 3D-link enables the 3D context to be shared between or among users via sharing of the 3D-link from the database. The 3D-link plays an important role in helping design engineers collaborate by eliminating the need to create pictures or copies of 3D models that may become outdated.

Abstract: A computer-implemented method and system automatically solves constraints in a computer-aided design (CAD) model. A CAD model of a real-world object capable of assuming various positions is constructed and a constraint solver process is initiated and executes while a user defines multiple positions of the CAD model. Input of data specified during a CAD design workflow is automatically input to the constraint solver process, and unknown variables are solved for as part of the CAD design workflow.

Abstract: A computer-implemented method automates motion of a computer-aided design (CAD) model. The CAD model represents a real-world object comprised of a number of parts. The part containing a user-specified entity is analyzed to collect data relevant to a motion study, for example, size data, location data, and material type data are collected. Based on the user-specified entity, parameters for automating motion are inferred and used to automate motion. The parameters include at least one of a part that is moved directly by a motor, a location on the part where the motor is mounted, a motor type, an axis of motion of the part, and a motion function indicating a change of motion over time.

Abstract: A computer-implemented method and system automatically adjusts the size of a rigid body model. The method and system construct a two-dimensional model or a three-dimensional model, where the model has one or more rigid bodies. The rigid bodies are converted into geometric primitives that represent a respective rigid body and enable the respective rigid body to resize. One or more of the primitives are constrained to one another. A solver process changes a size of at least one geometric primitive and a rigid body simulation process uses the resized primitive(s) as input.

Abstract: A computer-implemented method and system automatically manages relationships between moving parts of a computer-aided design model. Two parts are selected, the parts being structurally independent of one another. One of the parts is determined to be a driving part and the other part is determined to be a driven part. A new position is applied to the driving part, and temporary constraints between the driving part and the driven part are added. A constraint solver is executed to move the two parts into solved positions. Additionally, after execution of the constraint solver, the added temporary constraints are removed.

Abstract: A modeling and simulation environment enables a user to create a model of a stiff chemical or biological system. The stiff chemical or biological system refers to a system that includes at least two or more different time scales of the chemical or biochemical reactions. The modeling and simulation environment also enables the user to solve the stiff chemical or biological system using a leaping algorithm. The leaping algorithm may leap over simulation of the reactions occurring in the time interval to accelerate the simulation of the chemical or biological system. The algorithm maximizes the size of the time interval by adjusting the size of the time interval using a bracketing algorithm.

Abstract: A computer-implemented method and system automatically adjusts the size of a rigid body model. The method and system construct a two-dimensional model or a three-dimensional model, where the model has one or more rigid bodies. The rigid bodies are converted into geometric primitives that represent a respective rigid body and enable the respective rigid body to resize. One or more of the primitives are constrained to one another. A solver process changes a size of at least one geometric primitive and a rigid body simulation process uses the resized primitive(s) as input.

Abstract: Automatically computing the reflected mass or reflected inertia of a computer-aided design model comprised of a motor includes executing a simulation of the model, using the simulation results to compute the reflected mass or reflected inertia, and treating the non-motor parts of the model as a virtual body having a time-varying mass or a time-varying inertia. The mass or inertia of the virtual body at a specific time is the reflected mass or reflected inertia, respectively, of the model at the specific time.

Abstract: A computer-implemented method automates motion of a computer-aided design (CAD) model. The CAD model represents a real-world object comprised of a number of parts. The part containing a user-specified entity is analyzed to collect data relevant to a motion study, for example, size data, location data, and material type data are collected. Based on the user-specified entity, parameters for automating motion are inferred and used to automate motion. The parameters include at least one of a part that is moved directly by a motor, a location on the part where the motor is mounted, a motor type, an axis of motion of the part, and a motion function indicating a change of motion over time.

Abstract: Automatically computing the reflected mass or reflected inertia of a computer-aided design model comprised of a motor includes executing a simulation of the model, using the simulation results to compute the reflected mass or reflected inertia, and treating the non-motor parts of the model as a virtual body having a time-varying mass or a time-varying inertia. The mass or inertia of the virtual body at a specific time is the reflected mass or reflected inertia, respectively, of the model at the specific time.