Home
Diamonds
Validation
Dynamic analysis
Bar structures
DLX 03: Planar frame – dynamic response

DLX 03: Planar frame – dynamic response

Description

Material		Modulus of elasticity	$E=200 000 N/mm^2$
		Density	$\rho=7800 kg/m^3$
		Poisson’s ratio	$\nu= 0.3$
Geometry	Cross-section	Area	$A = 2872 mm^2$
		Moment of inertia	$I = 19 400 000 mm^4$
	Boundary conditions	Points A	Simple supports
Loads		In point C	Sinusoidal force with amplitude $F=100kN$ and frequency of $12.732Hz$ Damping: 5%
Mesh		No. of divisions	20

Results

Eigen modes

Eigen mode¹	Shape	Independent reference	Diamonds¹	Difference
1		16.46Hz	16,33Hz	-0,79%
2		38,17Hz	36,66Hz	-3,96%

¹ Only the modes relevant for the dynamic response are listed in this table

Dynamic response

Deformation $\delta_y$ due to the dynamic load in Diamonds

Location	Which result	Independent reference	Diamonds	Difference
B	Deformation $\delta_y$	98 mm	99,8mm	1.84%
C	Deformation $\delta_y$	227 mm	225,2mm	-0,79%

References

Mécaniciens, S. F. D. (1990). Guide de validation des progiciels de calcul des structures: SDLL 08: grillage plan de poutres.

Tested in Diamonds 2025.

Article Attachments

.bsf

SDLL08 102 KB

Was this article helpful?

Need Support?

Can't find the answer you're looking for? Don't worry we're here to help!

CONTACT SUPPORT