scholarly journals Experimental and mechanical model for predicting the behaviour of minor axis beam-to-column semi-rigid joints

2002 ◽  
Vol 44 (6) ◽  
pp. 1047-1065 ◽  
Author(s):  
L.R.O. de Lima ◽  
S.A.L. de Andrade ◽  
P.C.G. da S. Vellasco ◽  
L.S. da Silva
Keyword(s):  
Mechanical Model ◽  
Minor Axis ◽  
Rigid Joints

Mechanical model for the analysis of steel frames with semi rigid joints

2009 ◽  
Vol 65 (3) ◽  
pp. 631-640 ◽  
Author(s):  
A.N.T. Ihaddoudène ◽  
M. Saidani ◽  
M. Chemrouk
Keyword(s):  
Mechanical Model ◽  
Steel Frames ◽  
Rigid Joints

ANALYSIS OF SPACE FRAMES WITH GENERALIZED SEMI-RIGID CONNECTIONS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Shujin Duan ◽  
Zhiyue Li ◽  
Meixiang Liu ◽  
Xiaofeng Xie
Keyword(s):  
Mechanical Model ◽  
Stiffness Matrix ◽  
Element Analysis ◽  
Rigid Frame ◽  
Space Frames ◽  
The Matrix ◽  
Reaction Forces ◽  
Element Number ◽  
Rigid Joints ◽  
Independent Zero

A mechanical model and analytic method are proposed, in which, the axial, the shearing and the bending semi-rigid characteristics of space frames are taken into account. An independent zero-length connection element comprising six translational and rotational springs is used to simulate the beam-to-column connection. The model, namely six-spring mechanical model, has an advantage that the element number of structure does not increase. The matrix displacement method is used to analyze mechanism of the model, including element analysis and structural analysis. The stiffness matrix of the element is derived. Some reaction forces at the end of the element are obtained when it is subjected to two kinds of different loads respectively. The obtained stiffness matrix gets the characteristics of symmetry and singularity and that makes the size of total stiffness matrix for semi-rigid frame the same as that for frame with rigid joints.

Mechanical Model Study of a Bolted Endplate Minor Axis Joint

2010 ◽  
Vol 163-167 ◽  
pp. 726-729
Author(s):  
Zhi Yu Wang ◽  
Qing Yuan Wang
Keyword(s):  
Mechanical Model ◽  
Plate Theory ◽  
Minor Axis ◽  
Model Study ◽  
Mathematical Expressions ◽  
Proposed Model ◽  
Special Concern ◽  
The Moment ◽  
Relationship Of

An analysis of a bolted endplate minor axis joint that is subjected to bending is presented in this paper. The methodology for predicting the moment-rotation relationship of such joint is based on the component method and appropriate mathematical expressions. The component of column web in bending is of special concern, by using yield line analysis and plate theory, for calculation of the resistance and the stiffness respectively. A case study is reported in this work to validate the proposed mechanical model. The result is found to be satisfactory for the prediction of moment-rotation relationship, and the validity of the proposed model is discussed.

scholarly journals Experimental Investigation on the Mechanical Behavior of Semi-Rigid Composite Joints Loaded along the Minor-Axis

2015 ◽  
Vol 9 (1) ◽  
pp. 12-20
Author(s):  
Shizhe Chen ◽  
Zhan Wang ◽  
Chao Zhou ◽  
Panyuan Chen
Keyword(s):  
Mechanical Behavior ◽  
Concrete Slab ◽  
Minor Axis ◽  
Composite Joints ◽  
Composite Joint ◽  
Seat Angle ◽  
Bare Steel ◽  
Plate Connections ◽  
Rigid Joints ◽  
Steel Joints

Today’s design of spatial steel frames requires beam-to-column connections to be checked in the direction of the minor-axis of inertia of beam section. The mechanical behavior of minor-axis connections for bare steel joints and composite joints has been investigated by experiments. A comparison of the experimental results between the bare steel joints and composite joints shows that the mechanical behavior of the minor-axis composite joint is obviously effected by the reinforcing concrete slab, which is transversely reinforced for bending and is connected to the steel beam via shear studs, this is more in line with the mechanical behavior of the frame joint. The investigation indicates that: (1) Minor-axis joints with flush end-plate connections and seat angle with double web angles connections are all typical semi-rigid joints. The bearing capacity and the rotation ability of the joints cannot be ignored in the design. (2) Due to the composite effects of the reinforcing concrete slab, sagging moment and hogging moment must be taken into consideration when the mechanical model is established using component method.

TECHNOLOGICAL CONTROL OF THE CONTACT PRESSURE ON THE CYLINDRICAL SUBSTRATE FROM THE SIDE OF THE COATING ADDITIVELY FORMED ON ITS EXTERNAL SURFACE

2020 ◽  
Author(s):  
Dmitriy Parshin
Keyword(s):  
Stress State ◽  
Contact Pressure ◽  
Mechanical Model ◽  
External Surface ◽  
Layer By Layer ◽  
Layer Formation ◽  
Technological Control ◽  
Manufactured Products ◽  
Arbitrary Thickness

The article gives an example of controlling the stress state parameters of additively manufactured products. The study was carried out on the basis of a developed non-classical mechanical model of the process of layer-by-layer formation of a coating of arbitrary thickness on a cylindrical substrate. The model is based on modern concepts of the mechanics of continuously growing bodies and allows one to obtain fairly simple analytical dependencies. On the basis of the latter, the problem of technological control of the evolution of contact pressure at the substrate – coating interface is solved in the article. A number of practically significant conclusions have been made.

An instructive chemo-mechanical model for bonded geomaterials

2005 ◽  
Vol 9 (5-6) ◽  
pp. 671-688
Author(s):  
Roberto Nova ◽  
Marco Parma
Keyword(s):  
Mechanical Model

FINE-TUNING OF MODELLING STRATEGY TO SIMULATE THERMO-MECHANICAL BEHAVIOUR OF DOUBLE FRICTION PENDULUM SEISMIC ISOLATORS UST ESTIMATOR

2019 ◽  
Vol 3 (Special Issue on First SACEE'19) ◽  
pp. 165-172
Author(s):  
Vincenzo Bianco ◽  
Giorgio Monti ◽  
Nicola Pio Belfiore
Keyword(s):  
Multibody Dynamics ◽  
Mechanical Behaviour ◽  
Mechanical Model ◽  
Dynamic Behaviour ◽  
Experimental Testing ◽  
Fine Tuning ◽  
Proposed Model ◽  
Modelling Techniques ◽  
Friction Pendulum

The use of friction pendulum devices has recently attracted the attention of both academic and professional engineers for the protection of structures in seismic areas. Although the effectiveness of these has been shown by the experimental testing carried out worldwide, many aspects still need to be investigated for further improvement and optimisation. A thermo-mechanical model of a double friction pendulum device (based on the most recent modelling techniques adopted in multibody dynamics) is presented in this paper. The proposed model is based on the observation that sliding may not take place as ideally as is indicated in the literature. On the contrary, the fulfilment of geometrical compatibility between the constitutive bodies (during an earthquake) suggests a very peculiar dynamic behaviour composed of a continuous alternation of sticking and slipping phases. The thermo-mechanical model of a double friction pendulum device (based on the most recent modelling techniques adopted in multibody dynamics) is presented. The process of fine-tuning of the selected modelling strategy (available to date) is also described.

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