Marc高级非线性仿真解决方案
裂纹扩展分析是预测反复施加应力时裂纹扩展情况的功能。众所周知，如果施加在裂纹上的应力的变化幅度在一定范围内，裂纹就会一点一点稳步扩展，裂纹达到危险长度之前的应力施加次数通常用“Paris定律”来计算。裂纹扩展分析可用来对长期使用的设备制定维护计划等。“Marc 2014”不仅可以评估沿裂纹前缘的裂纹扩展情况，还可以评估分离的各裂纹之间的裂纹扩展情况。
使用新的非线性接触功能，用户无需太多操作，通过较少次迭代就可实现收敛，从而求解。另外，Marc 2014能够分析几乎不可压缩的装满液体的瓶子和容器，而且还扩展了电磁场分析功能，可以处理感应加热及基于感应加热的轧制工艺等。
Marc是一款功能强大、用途广泛的非线性有限元分析软件，可准确地仿真您的产品在静态、动态及多物理场加载条件下的响应。Marc可根据非线性材料行为的多样性和瞬态环境条件通过多种方式建模，是解决您的复杂设计问题的理想之选。借助创新技术和建模方法论，Marc 使得您能够仿真复杂机械系统的真实行为，从而在单一环境中解决您的制造和设计问题。
借助智能化解决方案充分利用您的硬件提高和实现所需性能，加之方便易用的建模工具，使您能够真正了解和探究非线性问题的内在本质。无论您的设计涉及大变形、大应变、非线性材料、复杂接触，还是多物理场之间的相互作用，Marc都能帮助您解决这些问题，使您能够深入地了解产品行为。
MSC Marc 2014.0.0 (64bit) | 1.0 Gb
MSC Software Corp. has announced the 2014 release of Marc, its general-purpose, nonlinear finite element analysis (FEA) solution for simulating part and product behavior under static, dynamic and multiphysics loading conditions. Marc 2014, according to the company, introduces a new 3D crack propagation capability to more accurately predict failure in products. The release also delivers enhanced nonlinear contact features, improved modeling for electromagnetics as well as easier CAD defeaturing and mesh generation capabilities.
For better accuracy of crack propagation studies critical in safety-related industries, Marc 2014 offers a new capability for high-cycle fatigue that, says the company, will help engineers determine whether cracks will propagate and reach a critical length after so many cycles. How it operates is that a small number of representative cycles are modeled in Marc, after which Paris’ law is used to calculate the number of cycles before damage. Marc 2014 also has been enhanced with an improved method for scaling crack growth along a crack front and between separate cracks, which helps improve the accuracy of the solution, according to the company.
MSC says that enhanced nonlinear contact capabilities in Marc 2014 improve convergence. This improvement, explains the company, is achieved through upgraded defaults designed to realize convergence in fewer iterations with less user intervention when using segment-to-segment contact. Implementing a friction model has also been updated to improve convergence and the accuracy of contact solutions.
The Marc pressure cavity capability, which is available for planar, axisymmetric and 3D analyses, has been expanded so that it now supports a nearly incompressible fluid as well as a perfect gas law. MSC says that this enhancement will help solve a new class of problems such as water-filled bottles, hydromounts, seals and other containers. Engineers can now analyze the performance of the fluid-filled containers without explicitly modeling the fluid.
The electromagnetic capabilities in Marc see the introduction of a circuit approach that lets engineers apply either current or voltages to a system. When combined with Marc’s thermal and structural capabilities, this facilitates solving problems ranging from solenoids to induction heating of rolling processes, says MSC. The electromagnetic capabilities may also be used for other low-frequency applications, notes the company.
The company says that Mentat, the integrated Marc user interface for nonlinear analysis and pre- and post-processing, has been enhanced to improve productivity with the introduction of a new method to allow import of geometry from most CAD packages. Geometric operations may be performed on native Parasolid geometry, and removal of small features like holes, fillets, chamfers, small surfaces and small bodies can be achieved with defeaturing. Features can also be offset or moved after the CAD model has been imported into Mentat.
Marc 2014 also introduces a new automatic meshing capability that supports three types of Parasolid bodies – wires, sheets and volumes. Either a fully automatic approach or a flexible, user-controlled meshing approach is available to mesh solids with lower- or higher-order shell or tetrahedral elements. Incorporating dimensional and curvature information can perform meshing of complex assemblies. The model can be directly used for a contact simulation.
Marc is customizable with user subroutines. More than 175 user subroutines are available to incorporate advanced material models, load and boundary conditions or element technology. Additionally, the Mentat interface can be customized using Python. Marc supports multicore desktop workstations as well as parallel systems and takes advantage of available GPUs (graphical processing units) to achieve higher performance.
Download an overview of Marc 2014: http://mscdrupal.mscsoftwarecorpo.netdna-cdn.com/ro_marc-2014_ltr_w.pdf
About MSC Software
MSC Software is one of the ten original software companies and the worldwide leader in multidiscipline simulation. As a trusted partner, MSC Software helps companies improve quality, save time, and reduce costs associated with design and test of manufactured products. Academic institutions, researchers, and students employ MSC’s technology to expand individual knowledge as well as expand the horizon of simulation. MSC Software employs 1,100 professionals in 20 countries.
Name: MSC Marc
Version: (64bit) 2014
Home: www.mscsoftware.com
Interface: english
OS: Windows XP / Vista / 7even / 8 / 8.1
Size: 1.0 Gb
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