SIMULIA リソース・センター

In a free span, the inner pipe of a pipe-in-pipe system (PiP) bends substantially due to internal pressure and temperature and possibly contacts the outer pipe. The study is motivated by the need to understand how the interaction between the two pipes affects the PiP behavior at a free span during thermal expansion and how a PiP can be modeled adequately. The pipes were simulated with thick wall pipe, elbow, and shell elements. The interaction between the inner and outer pipes was simulated with multi-point constraints (MPC), tube-to-tube contact elements (ITT), and contact surfaces. Finite element (FE) model accuracy and cost effectiveness were compared in a case study.

Customer Papers

The importance of sensor location is crucial for a correct assessment of the dynamic response of structures and, if early structural damage detection is a concern, for increasing the POD-Probability of Detection of Structural Health Monitoring (SHM) vibration-based methods. Also, the high cost of sensoring equipment (accelerometers, strain-gauges, fibre-optic sensors, etc...) implies the use of a minimum number of sensors that must be judiciously positioned in order to extract adequate and relevant information from the monitored structure. Critical Materials S.A. is developing algorithms for sensor positioning procedures, as an auxiliary tool for the deployment of vibration-based SHM techniques, based on Eigenmode and Eigenfrequency data retrieved from natural frequency extraction analysis procedures.

Customer Papers

Oil sands are becoming an increasingly important source of petroleum. The form of oil in these deposits is highly viscous, making conventional drilling practices unfeasible. Extraction with wells is facilitated by increasing the temperature of the oil-bearing layer, thereby reducing the viscosity of the oil and enabling it to flow under gravity [1,2]. An example of this approach is steam-assisted gravity drainage. Abaqus/Standard provides an analysis capability that allows for coupling between heat transfer, pore fluid flow, and displacement. In this Technology Brief, we demonstrate how this capability can be used to simulate the thermally assisted gravity drainage of an oil sand formation.

Tech Notes

Creating a viable simulation approach capable of representing key fundamental aspects of scratch of polymers is an extremely challenging task. The simulation must include complicated material response, such as nonlinear viscoelastic/viscoplastic behavior of the polymeric material at large strains. In addition, the model must include a sufficiently detailed representation of the scratching event using frictional contact between the indenter and the sample, and the model must take into account the indenter loading history. This paper discusses how Abaqus/Explicit models using the PolyUMod advanced Parallel Network Material models were used in conjunction with detail experiments processed by Kornucopia to create scratch simulations that correlated well to several physical scratch tests.

Customer Papers

Flexible, light-weight wire ring-net barriers are used to stop falling rocks serving as protection for villages and roadways in mountainous regions. The steel wire-ring nets are difficult to model because of their complex geometry. The rings consist of a single steel wire strand wrapped together multiple times, and are connected to one another in a chainmail fashion to form the net. Their geometry and behavior represent a challenge to finite element modeling. This paper presents quasi-static and impact explicit FE simulation results of wire-ring net tests using an approach which relies on the general contact algorithm available in the FE code Abaqus. This approach allows a better description of the physics involved in impact problems related to rock falls.

Customer Papers

The usage of modern suspension systems in passenger buses increases the performance of the vehicle, to include a new kind of suspension in a passenger bus requires a careful examination of the packaging needs, load transfer and structure characteristics which leads to a safe design to be manufactured. The main objective of this paper is to provide a design proposal for a passenger bus frame to incorporate a commercial tri-axle pneumatic suspension, a system level CAE evaluation is presented to validate and optimize the proposed design.

Customer Papers

The main technological problem in Coriolis meter design is to achieve robust flow and density measurement signals. In this note, it is demonstrated that Abaqus is a well suited tool for implementation of related design performance criteria. It has played a major role in the development process of the new ABB Coriolis Master FCB330/350.

Customer Papers

TMC Chassis CAE has used Abaqus successfully for many years. This paper presents three recent examples of Abaqus analyses performed by TMC Chassis CAE. 1. Shape Optimization of Suspension Arm comprehending material and geometric nonlinearities. 2. A new method to identify material coefficients of static and dynamic characteristics of rubber using Abaqus. (Reproduce stress relaxing behavior, strain rate dependency, frequency dependency and amplitude dependency using one set of material coefficients) 3. FE Analysis Method to simulate the Static Stiffness Characteristic of Air Suspension Stiffness.

Customer Papers

Early prediction of road loads is vital in vehicle development program to allow maximum flexibility for optimum design of structure. In this paper, Abaqus co-simulation based approach is explored and successfully applied to study vehicle-road interaction. The co-simulation approach provides user with tremendous flexibility in modeling vehicle system. The power of explicit and implicit codes can be unleashed to extract maximum benefits out of them. This combination allows user to simulate complex elements of system without putting over burden on system requirements. The ease with which highly nonlinear elements like tires and bump stoppers can be represented, free use of substructures, selective subcycling are the vital features of this study.

Customer Papers

Structural Analysis Engineer provides a broad environment to conduct structural static, frequency, buckling, modal dynamic response, and structural thermal simulation of parts and assemblies within the 3DEXPERIENCE platform. It boosts innovation in product engineering and fosters collaboration in an intuitive environment using state-of-the art Abaqus simulation technology.

Brochures

PowerDELTA by SIMULIA provides an end-to-end solution from geometry preparation through simulation and optimization in PowerFLOW , eliminating manual third-party tools. With the industry’s fastest time to the highest quality simulation meshes, it accelerates collaboration between design and engineering teams, improving products and processes for leading manufacturers.

Brochures

A strain gradient dependent plasticity model is implemented using the user element subroutine interface in ABAQUS. Based on the implementation, a simple shear case is studied as well as a more complex crack tip problem. Large influence of the incorporated material length scale is observed in the two cases.

Customer Papers