scholarly journals METHOD OF CALCULATING THE STRESSSTRAIN STATE OF FRAME STRUCTURES OF THE TRACTOR TRAILERS AT VARIOUS EXTERNAL INFLUENCES

2020 ◽  
pp. 5-5
Author(s):  
ANVAR A. TOGAEV ◽  
ABDULAZIZ A. SHERMUKHAMEDOV
Keyword(s):  
Carrying Capacity ◽  
Strain State ◽  
Load Carrying Capacity ◽  
Strength Parameters ◽  
Stress Strain ◽  
Method Of Calculation ◽  
Stress Strain State ◽  
Load Carrying ◽  
Experimental Researches ◽  
Good Agreement

In the article on an example of the tractor-trailer, a load-carrying capacity of 4 tons considers the technique for calculating the stress-strain state of the trailer frame. The comparative analysis of the results of theoretical and experimental researches is given. The calculations take into account the specific road conditions of the cotton-producing countries, which occupy four categories of road sections. The proposed method of calculation of the stress-strain state of the frame gives a good agreement with the experimental data (maximum values of stress in the range 11%) and can be used in justifying the strength parameters of tractor-trailers.

scholarly journals Method of Calculating the Stress-Strain State of Frame Structures of the Autotractor Trailers for Static Loading Conditions

2020 ◽  
Vol 8 (5) ◽  
pp. 4619-4623
Keyword(s):  
Carrying Capacity ◽  
Static Loading ◽  
Strain State ◽  
Load Carrying Capacity ◽  
Stress Strain ◽  
Stress Strain State ◽  
Load Carrying ◽  
Analysis Of Results ◽  
Experimental Researches ◽  
Satisfactory Quality

In the article on an example of the autotractor trailer, load-carrying capacity of 4 tons considers the technique for calculating the stress-strain state of the trailer frame. The comparative analysis of results of theoretical and experimental researches is given. It is established, that the deviations of the maximum values of stress at driving on road with tar coating of satisfactory quality is in limits of 4 %, on gravel roads with worn areas - 10 %, on the rotary strip with ridges in height of 8-12 cm and step of 90 cm - 11 %, on a deep ditch depth of 40-45 cm and width 100-150 cm - 9 %.

scholarly journals Design of steering system of a buggy

2020 ◽  
Vol 327 ◽  
pp. 03004
Author(s):  
D. Santana Sanchez ◽  
A. Mostafa
Keyword(s):  
Carrying Capacity ◽  
Steering System ◽  
Nonlinear Finite Element ◽  
Load Carrying Capacity ◽  
Dynamic Effects ◽  
Flexural Behaviour ◽  
Steering Angle ◽  
Load Carrying ◽  
And Performance ◽  
Good Agreement

The present paper discusses the design analysis and limitations of the steering system of a buggy. Many geometrical and performance characteristics of the designed steering system were considered to address the kinematic constraints and load carrying capacity of the steering elements. Ackremann geometry approach was used to assess the limiting steering angle, while Lewis bending formula with the inclusion of dynamic effects was employed to characterise the flexural properties of the rack and pinion steering system. Analytical results were numerically verified using ABAQUS/Explicit nonlinear finite element (FE) package. Good agreement has been achieved between analytical and numerical results in predicting the flexural behaviour of the steering rack and pinion system.

Theoretical Investigation of Couple Stress Squeeze Films in a Curved Circular Geometry

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Vimala Manivasakan ◽  
Govindarajan Sumathi
Keyword(s):  
Theoretical Investigation ◽  
Carrying Capacity ◽  
Couple Stress ◽  
Squeeze Flow ◽  
Squeeze Film ◽  
Load Carrying Capacity ◽  
Fluid Inertia ◽  
Load Carrying ◽  
Inertia Forces ◽  
Good Agreement

A theoretical investigation of the laminar squeeze flow of a couple-stress fluid between a flat circular static disk and an axisymmetric curved circular moving disk has been carried out using modified lubrication theory and microcontinuum theory. The combined effects of fluid inertia forces, curvature of the disk and non-Newtonian couple stresses on the squeeze film behavior are investigated analytically. Each of these effects and their combinations show a significant enhancement in the squeeze film behavior, and these are studied through their effects on the squeeze film pressure and the load carrying capacity of the fluid film as a function of time. Two different forms of the gapwidth between the disks have been considered, and the results have been shown to be in good agreement with the existing literature.

Numerical Modeling of Gasdynamic Processes and Processes of Deformation in Compressor of Model Test Bench of the Gas-Distributing Unit

2015 ◽  
Vol 799-800 ◽  
pp. 865-869 ◽  
Author(s):  
Vladimir Yakovlevich Modorskiy ◽  
Arthur Fadanisovich Shmakov
Keyword(s):  
Numerical Modeling ◽  
Model Test ◽  
Strain State ◽  
Test Bench ◽  
State Structure ◽  
Stress Strain ◽  
Stress Strain State ◽  
Physical Experiments ◽  
Heat Loads ◽  
Good Agreement

In this work results of numerical modeling of the gasdynamic processes and processes of deformation proceeding in the compressor of the model test bench of the gas-distributing unit are provided. Fields of pressure and temperatures, and also component of the stress-strain state structure taking into account the imported gasdynamic and heat loads are received. A good agreement with data of physical experiments is received.

Load-Carrying Behaviour of Dowel-Type Timber Connections with Multiple Slotted-in Steel Plates

2011 ◽  
Vol 94-96 ◽  
pp. 43-47
Author(s):  
Xin Hai Fan ◽  
Sheng Dong Zhang ◽  
Wen Jun Qu
Keyword(s):  
Carrying Capacity ◽  
Steel Plates ◽  
Load Carrying Capacity ◽  
Timber Structures ◽  
Lateral Loads ◽  
Large Cross Section ◽  
Load Carrying ◽  
Timber Connections ◽  
Dowel Connection ◽  
Good Agreement

The multiple-shear dowel connection with slotted-in steel plates is one of the most efficient joints for large cross section timber structures. Experiments were performed on dowel-type timber connections with one, two and three slotted in steel plates under lateral loads parallel to the grain. Test variables include the number of steel plates, the spacing of the steel plates, and the dowel diameter. Results show that the load-carrying capacity of the dowel-type connection increased as the number and spacing of steel plates in the same thickness of timber specimens. Finally, a model of the load-carrying capacity of multiple shear steel-to-timber connections is presented, which showed good agreement with the results obtained in the experiment.

A Yield Criterion for Hybrid Asymmetric Metal Sandwich Structures and its Application

2016 ◽  
Vol 08 (01) ◽  
pp. 1650001 ◽  
Author(s):  
Chao Yuan ◽  
Qinghua Qin ◽  
T. J. Wang
Keyword(s):  
Carrying Capacity ◽  
Yield Criterion ◽  
Sandwich Beam ◽  
Large Deflections ◽  
Load Carrying Capacity ◽  
Flat Punch ◽  
Element Analysis ◽  
Load Carrying ◽  
Axial Stretching ◽  
Good Agreement

In this paper, a yield criterion for hybrid asymmetric metal sandwich structure is proposed including the combined effects of geometrical and physical asymmetries. Taking account of the interaction of bending and axial stretching and using the yield criterion, we obtain an analytical solution for large deflections of fully clamped hybrid asymmetric sandwich beam transversely loaded by a flat punch at mid-span. Moreover, finite element analysis is performed and good agreement is achieved between numerical results and analytical predictions. It is shown that the well-designed hybrid asymmetric sandwich beam may have higher load-carrying capacity than the conventional geometrically or physically asymmetric counterpart in large deflections.

Analysis of Stress–Strain State in a Steel Pipe Strengthened With a Composite Wrap

2014 ◽  
Vol 136 (5) ◽  
Author(s):  
Oleg V. Trifonov ◽  
Vladimir P. Cherniy
Keyword(s):  
Internal Pressure ◽  
Analytical Model ◽  
Strain State ◽  
Steel Pipe ◽  
Stress Strain ◽  
Stress Strain State ◽  
Element Simulation ◽  
Load Carrying ◽  
Scale Test ◽  
Buried Gas Pipeline

In this paper, strengthening of a steel pipe with a composite wrap is analyzed. An analytical model taking into account joint reaction of the pipe and the wrap, two-dimensional stress state and plastic strains in the pipe wall is developed. Verification of the model is performed by comparison of the numerical results to the full-scale test results for a strengthened pipe under the action of internal pressure. The developed model is applied to the analysis of a buried gas pipeline subjected to the internal pressure and temperature loading. The results obtained with the analytical model are compared to the results of a finite-element simulation. A good agreement is established. The effect of wrap thickness on the stress–strain state and load-carrying capacity of the strengthened pipe is studied.

scholarly journals Studies on stress- strain behaviour of fibre reinforced self-compacting concrete in confined state

2021 ◽  
Vol 309 ◽  
pp. 01054
Author(s):  
Gorla Jayasri ◽  
V Siva Prasad Raju ◽  
V Srinivasa Reddy ◽  
M Mounika
Keyword(s):  
Compressive Strength ◽  
Carrying Capacity ◽  
Ultimate Load ◽  
Confinement Effect ◽  
Load Carrying Capacity ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Strain Behaviour ◽  
Load Carrying ◽  
Ultimate Load Carrying Capacity

In the present study, the stress-stain behaviour of self-compacting concrete (SCC) and fibre reinforced self-compacting concrete (FRSCC) were taken up. The stress-strain behaviour was studied for the SCC and FRSCC mixes in unconfined and confined states. The confinement was given in the form of steel hoops in the cylinders, 3 hoops (0.8%), 4 hoops (1.1%), 5 hoops (1.3%) and 6 hoops (1.6%). The addition of fibres along with confinement of FRSCC with steel hoops enhanced the compressive strength, indicating further confinement effect in the FRSCC. It is observed that the addition of fibres is helpful in lower confinements only. Beyond 1.1% confinement, the addition of any type of fibres doesn’t show any effect on compressive strengths. From the stress-strain behaviour of all types of FRSCC, it is concluded that the ultimate load-carrying capacity and strains at peak stresses are more in SFRSCC and HFRSCC for mixes up to 1.1% confinement. The addition of fibres to SCC has increased the ductility in both confined and unconfined states

scholarly journals Stress - strain behaviour of confined nano silica-based concrete

2021 ◽  
Vol 309 ◽  
pp. 01048
Author(s):  
Kakara S J Kumar ◽  
M V Seshagiri Rao ◽  
V Srinivasa Reddy ◽  
S Shrihari
Keyword(s):  
Carrying Capacity ◽  
Ultimate Load ◽  
Confined Concrete ◽  
Load Carrying Capacity ◽  
Nano Silica ◽  
Stress Strain ◽  
Strain Behaviour ◽  
Load Carrying ◽  
Ultimate Load Carrying Capacity ◽  
Steel Rebars

In the present study, the stress-stain behaviour of confined concrete made with nano-silica (nano-SiO2) were taken up. The stress-strain behaviour was studied for the M30 and M50 grades nano-silica (nano-SiO2) concrete mixes confined with steel rebars. The confinement was given in the form of steel hoops in the cylinders, 3 hoops (0.8%), 4 hoops (1.1%), 5 hoops (1.3%) and 6 hoops (1.6%). The addition of nano-silica (nano-SiO2) along with confinement of concrete with steel hoops enhanced the compressive strength, indicating further confinement effect in the concrete. It is observed that the addition of nano-silica (nano-SiO2) is helpful in lower confinements only. Beyond 1.1% confinement, doesn’t show any effect on compressive strengths. From the stress-strain behaviour of all types of concrete mixes, it is concluded that the ultimate load-carrying capacity and strains at peak stresses are more in nano-silica (nano-SiO2) concrete with steel hoops for mixes up to 1.1% confinement. The addition of nano-silica (nano-SiO2) to concrete has increased the ductility in both confined and unconfined states

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