By Zia Javanbakht, Andreas Öchsner
This booklet deals an in-depth perception into the general-purpose finite point application MSC Marc, that is allotted by means of MSC software program company. it's a really expert software for nonlinear difficulties (implicit solver) that's universal in academia and undefined. the first objective of this publication is to supply a finished creation to a different characteristic of this software program: the consumer can write user-subroutines within the programming language Fortran, that is the language of all classical finite point programs. This subroutine function permits the person to exchange yes modules of the center code and to enforce new gains reminiscent of constitutive legislation or new parts. therefore, the performance of business codes (‘black box’) can simply be prolonged by way of linking person written code to the most middle of this system. this option permits to use a advertisement software program package deal with the pliability of a ‘semi-open’ code.
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Extra resources for Advanced Finite Element Simulation with MSC Marc: Application of User Subroutines
Subroutine . . Fig. 12 Structure of a sample Fortran program to perform the job. Although both of these methods are faithful to incorporate subtasks, the modular programming approach has the advantage of the independence of the modules, viz. modules can be run, tested and updated separately from the main program. In Fortran, both of the mentioned methods can be used. e. internal functions and/or subroutines whereas the modular concept can be incorporated using modules (Fig. 12). Normally a program is developed using a mixed-mode (procedural/modular approach).
It is called the result of function. 5 Procedural/Modular Programming 39 by the arguments but by the function itself acting as a variable. Because the name of a function is a variable, it has the advantage of being referenced in expressions while subroutines are invoked by a CALL statement. The procedure of a function is normally simpler than that of a subroutine. In other words, the purpose of a function is just calculating the result value while avoiding any manipulation of its arguments; called having minimum side effects.
One could get familiar with such conventions by acquiring more experience. To get some starting ideas, one may refer to [4, 5, 8, 9, 20, 21, 32]. 2 Programming - Phases and Tools Programming is arranging instructions for a computer to manage a task. During this process, some errors might be introduced which may be due to a wrong use of a command such as misspelling a keyword, called a syntax error. e. the program executes but the result is not as expected; it is rather hard to debug this kind of error.