RecurDyn V9R1 - Multi Disciplinary 글 편집

EHD (Elasto-Hydrodynamic Lubrication)

RecurDyn now contains 2 EHD toolkits: Rotational Lubrication toolkit and the Piston Lubrication toolkit. These toolkits enable RecurDyn to analyze the behavior of a lubricant film in the thin gap between rapidly-moving cylindrical surfaces and the hydrodynamic forces transmitted from the lubricant to the surfaces.

The Rotational Lubrication toolkit is for modeling primarily rotational motion, such as the motion found in journal bearings. The Piston Lubrication toolkit is for modeling primarily translational motion. It also supports RFlex (Flexible) Body analysis.

• EHD Bearing (Rotational Lubrication): Models fluid lubrication between journal bearing surfaces rotating at high speeds. Various effects, such as the Oil Hole and Groove Effects, can be included.
• EHD Piston (Piston Lubrication): Models fluid lubrication between a cylinder and a piston in which the piston can translate at high speed. This toolkit allows effect of the tilting of the piston on the pressure and thickness of the lubricant film to be analyzed. If the cylinder or piston is modeled as an RFlex body, the effect of body deformation on the pressure and lubricant thickness can also be analyzed. Complex piston shapes, including piston skirts, can be modeled.

TSG (Time Signal Generation)

The TSG enables RecurDyn to be used as a virtual test rig. It enables RecurDyn to rapidly find the Drive Signal that reproduces the Target Signal in computationally efficient, reduced complexity models. The simplified virtual test-rig model eliminates various nonlinearities of the actual test environment, and enables faster and simpler dynamic analysis.

In addition, the TSG can be combined with RecurDyn's MFBD (Multi Flexible Body Dynamics), allowing the user to perform both stiffness and durability analysis in a single environment of RecurDyn.

EDEM Interface

RecurDyn now has the ability to co-simulate with EDEM, powerful bulk material simulation software that uses the discrete element (particle) method to model the bulk, granular material.

When co-simulating, the particle dynamics solver of EDEM and powerful MBD (Multi-Body Dynamics) solver of RecurDyn are coupled so that the dynamics of the particles and the dynamics of the MBD system affect each other accurately. This enables more accurate predictions of the behavior and the loads acting on both the MBD system and the bulk material.

FMI 2.0 Support

RecurDyn supports FMI 2.0. Co-simulation with software supporting FMI 2.0 is now possible. For co-simulation with software that supports only FMI 1.0, the previously existing RecurDyn FMI 1.0 interface can still be used.