Some aspects concerning the displacements of the common point for a planar system of cantilever beams
Keywords:
screw theory, deformation, displacement, optimization, planar systemAbstract
We consider a planar system of cantilever bars which has a common point and we want to determine the mechanical and geometrical characteristics of a new bar (situated in the same plane) in order to obtain a minimum or maximum value for a certain criterion in a certain set of values. The calculation combines the theory of screws to obtain the equations from which one can determine the displacement of the common point and the forces in bars, with the numerical methods to obtain the optimum value for some criterion, the optimum being considered in the previous sense. A numerical example highlights the theory.
References
STANESCU, N.-D., On a planar system of cantilever bars with one common end, AVMS 25, Timisoara, May 30-31, 2025.
RACASAN, V., STANESCU, N.-D., On Spatial Systems of Bars Spherically Jointed at Their Ends and Having One Common End, Mathematics, 12, 37, 2680, 2024.
RACASAN, V., PANDREA, N., STANESCU, N.-D., On the rigid hung by elastic bars subjected to axial forces, Proceedings of the 29th International Congress on Sound and Vibration, Prague, Czech Republic, July, 9-13, 2023.
MARQUES F., ROUPA I., SILVA M. T., FLORES P., LANKARANI, H. M., Examination and comparison of different methods to model closed loop kinematic chains using Lagrangian formulation with cut joint, clearance joint constraint and elastic joint approaches, Mechanism and Machine Theory, 160, 104294, 2021.
SORGONA, O., CIRELLI, M., GIANNINI, O., VEROTTI, M., Comparison of flexibility models for the multibody simulation of compliant mechanisms, Multibody System Dynamics, 63, 3, 665, 2024.
CHEN, J., CHEN, Q., LIANG, D., MO, J., Solution of geometrico-static problems and motion experiments for a suspended under-constrained parallel mechanism driven by two flexible cables, Journal of Mechanical Science and Technology, 38, 8, pp. 4365-4376, 2024.
DING, X., ISAKSSON, M., Quantitative analysis of decoupling and spatial isotropy of a generalised rotation-symmetric 6-DOF Stewart platform, Mechanism and Machine Theory, 180, 105156, 2023.
ŠIKA, Z., KRIVOŠEJ, J., VYHLÍDAL, T., Three dimensional delayed resonator of Stewart platform type for entire absorption of fully spatial vibration, Journal of Sound and Vibration, 571, 118154, 2024.
HU, Y., ZHANG, H., WANG, K., FANG, Y., MA, C., Analytical analysis of vibration isolation characteristics of quasi-zero stiffness suspension backpack, International Journal of Dynamics and Control, 12, 2, pp. 4387-4397, 2024.
CHEN, W., WANG, S., LI, J., LIN, C., YANG, Y., REN, A., LI, W., ZHAO, X., ZHANG, W., GUO, W., GAO, F., An ADRC-based triple-loop control strategy of ship-mounted Stewart platform for six-DOF wave compensation, Mechanism and Machine Theory, 184, 105289, 2023.
YANG, S., XU, P., LI, B., Design and rigid-flexible dynamic analysis of a morphing wing eight-bar mechanism, Nonlinear Dynamics, 112, pp. 15025-15060, 2024.
XU, A., XU, Z., ZHANG, H., HE, S., WANG, L., Novel coarse and fine stage parallel vibration isolation pointing platform for space optics payload, Mechanical Systems and Signal Processing, 213, 111359, 2024.
JIANG, Y., XIAO, H., YANG, G., GUO, H., LIU, R., DENG, Z., Study on transient dynamics of the pyrotechnic-driven large flexible expansion mechanism, Nonlinear Dynamics, 112, pp. 15917-15932, 2024.
PANDREA, N., Elements of mechanics of rigid solids in pluckerian coordinates, The Romanian Academy Publishing House, Bucharest, 2000.
Published
Issue
Section
Copyright (c) 2025 The Romanian Journal of Technical Sciences. Applied Mechanics.

This work is licensed under a Creative Commons Attribution 4.0 International License.