Category Archives: Stress Analysis

Stress Analysis

Stress–strain analysis (or just stress analysis, for short) is an engineering discipline covering methods to determine the stresses and strains in materials and structures subjected to forces or loads.

Nastran run in batch mode

Sometimes is necessary to perform several Nastran runs, and by running one by one could be necessary a lot of time. Hereafter are illustrated two methods to speed up these operations. There is an effective method to perform this operation … Continue reading

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Nastran launch commands

The Nastran solver is executed usually by command line like „nastran“. Generally it could be with different name,  due to the needs to specify the version of solver. The format nastran command is:   nastran2012  input_file  keyword1 = value1  keyword2 … Continue reading

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Random Vibration Analysis – Nastran SOL 111

Introduction Random vibration is motion which is non-deterministic, meaning that future behavior cannot be precisely predicted, and it is a characteristic of the input or excitation.  To specific a random vibration is usually is used the ASD (acceleration spectral density). … Continue reading

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Frequency Response – Nastran SOL 111

Frequency response is the quantitative measure of the output spectrum of a system or device in response to a stimulus, and is used to characterise the dynamics of the system. It is a measure of magnitude and phase of the … Continue reading

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Bending Moments and Deflections – 8

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Vibration Analysis – Nastran SOL 103

Vibration Analysis – Nastran SOL 103 Continue reading

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Bending Moments and Deflections – 7

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Bending Moments and Deflections – 6

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Bending Moments and Deflections – 5

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Bending Moments and Deflections – 4

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