massmatrixcorrectionmodule Module Reference

Module with subroutines for superelement mass matrix correction. More...

Functions/Subroutines
subroutine	mmcrigaccelvectors (supel, rotCenter, rigVdd)
	Generates the 6 rigid body acceleration vectors for a superelement. More...
subroutine	mmcrigidmassproperties (supel, ierr)
	Calculates the rigid body mass properties for a superelement. More...
subroutine	mmcinitmassmatrixcorrection (supel, ierr)
	Initializes the matrix (R^t*R)^-1*R^t for mass matrix correction. More...
subroutine, private	mmcmassmatrixcorrection (supel, elVd, momentError, forceError, radiusVec, ErrNorm, ierr)
	Calculates the error in the mass matrix. More...
subroutine	mmcmassmatrixwarning (supel, uld, ierr)
	Checks the error in the mass matrix and print warning if increasing. More...
real(dp) function, dimension(sup%ntotdofs)	mmcgetmasstorquecorrection (sup)
	Returns a correction force vector that accounts for the mass matrix error. More...

Detailed Description

Module with subroutines for superelement mass matrix correction.

This module contains some subroutines for calculating mass matrix corrections for superelements what undergo high-speed rotations.

Function/Subroutine Documentation

mmcgetmasstorquecorrection()

real(dp) function, dimension(sup%ntotdofs) massmatrixcorrectionmodule::mmcgetmasstorquecorrection

(

type(supeltype), intent(in)

sup

)

Returns a correction force vector that accounts for the mass matrix error.

Parameters

[in]

sup

The superelement to calculate for correction vector for

Author

Karl Erik Thoresen / Bjorn Haugen

Date

1990s

Author

Knut Morten Okstad

Date

21 Jan 2004

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mmcinitmassmatrixcorrection()

subroutine massmatrixcorrectionmodule::mmcinitmassmatrixcorrection	(	type(supeltype), intent(inout)	supel,
		integer, intent(out)	ierr
	)

Initializes the matrix (R^t*R)^-1*R^t for mass matrix correction.

Parameters

	supel	The superelement to calculate the rtr_r matrix for
[out]	ierr	Error flag

Author

Karl Erik Thoresen / Bjorn Haugen

Date

1990s

Author

Knut Morten Okstad

Date

21 Jan 2004

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mmcmassmatrixcorrection()

subroutine, private massmatrixcorrectionmodule::mmcmassmatrixcorrection ( type(supeltype), intent(in)  supel, real(dp), dimension(:), intent(in)  elVd, real(dp), dimension(3), intent(out)  momentError, real(dp), dimension(3), intent(out)  forceError, real(dp), dimension(3), intent(out), optional  radiusVec, real(dp), dimension(2), intent(out), optional  ErrNorm, integer, intent(out), optional  ierr  )

private

Calculates the error in the mass matrix.

Parameters

[in]	supel	The superelement to calculate the mass matrix error for
[in]	elVd	Superelement velocity vector in local axis directions
[out]	momentError	Torque error estimate for the superelement
[out]	forceError	Force error estimate for the superelement
[out]	radiusVec	Vector from axis of rotation to center of gravity
[out]	ErrNorm	Error norms
[out]	ierr	Error flag

Author

Karl Erik Thoresen / Bjorn Haugen

Date

1990s

Author

Knut Morten Okstad

Date

21 Jan 2004

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mmcmassmatrixwarning()

subroutine massmatrixcorrectionmodule::mmcmassmatrixwarning	(	type(supeltype), intent(inout)	supel,
		real(dp), dimension(:), intent(in)	uld,
		integer, intent(out)	ierr
	)

Checks the error in the mass matrix and print warning if increasing.

Parameters

	supel	The superelement to check mass matrix error for
[in]	uld	Superelement velocity vector in local axis directions
[out]	ierr	Error flag

Author

Karl Erik Thoresen / Bjorn Haugen

Date

1990s

Author

Knut Morten Okstad

Date

21 Jan 2004

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mmcrigaccelvectors()

subroutine massmatrixcorrectionmodule::mmcrigaccelvectors	(	type(supeltype), intent(in)	supel,
		real(dp), dimension(3), intent(in)	rotCenter,
		real(dp), dimension(:,:), intent(out)	rigVdd
	)

Generates the 6 rigid body acceleration vectors for a superelement.

Parameters

[in]	supel	The superelement to generate the acceleration vectors for
[in]	rotCenter	The rotation center of the superelement
[out]	rigVdd	Rigid body acceleration vectors of the superelement

Author

Bjorn Haugen

Date

Oct 1999

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mmcrigidmassproperties()

subroutine massmatrixcorrectionmodule::mmcrigidmassproperties	(	type(supeltype), intent(inout)	supel,
		integer, intent(out)	ierr
	)

Calculates the rigid body mass properties for a superelement.

Parameters

	supel	The superelement to calculate mass properties for
[out]	ierr	Error flag

Author

Bjorn Haugen

Date

1 Oct 1997

Author

Karl Erik Thoresen

Date

4 Jun 1998

Author

Bjorn Haugen

Date

14 Oct 1999

Author

Knut Morten Okstad

Date

21 Jan 2004

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