scholarly journals Agustin de Betancourt’s Mechanical Dredger in the Port of Kronstadt: Analysis through Computer-Aided Engineering

2018 ◽  
Vol 8 (8) ◽  
pp. 1338 ◽  
Author(s):  
José Rojas-Sola ◽  
Eduardo De la Morena-De la Fuente
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
3D Model ◽  
Russian Empire ◽  
Computer Aided Engineering ◽  
Operating Conditions ◽  
The Finite Element Method ◽  
Safety Coefficient ◽  
Computer Aided ◽  
The Russian Empire

This article analyzes the first self-propelled floating dredging machine designed and executed by Agustín de Betancourt in 1810 to dredge the port of Kronstadt (Russia). With this objective, a study of computer-aided engineering (CAE) has been carried out using the parametric software Autodesk Inventor Professional, consisting of a static analysis using the finite element method, of the 3D model which is reliable under operating conditions. The results have shown that the system of inertia drums proposed by Betancourt manages to dissipate the tensions between the different elements, locating the highest stresses in the links of the bucket rosary, specifically at the point of contact between links. Similarly, the maximum displacements and the greatest deformations (always associated with these points of greater stress), are far from reaching the limits of breakage of the material used in its construction, as well as the safety coefficient of the invention, confirming that the mechanism was oversized, as was generally the case at the time. This analysis highlights the talent of the Spanish engineer and his mastery of mechanics, in an invention, the first of its kind worldwide, which served the Russian Empire for many years.

Metal Forming and the Finite-Element Method

1989 ◽  
Author(s):  
Shiro Kobayashi ◽  
Soo-Ik Oh ◽  
Taylan Altan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Metal Forming ◽  
Computer Aided Design ◽  
The Finite Element Method ◽  
Forming Technology ◽  
Computer Aided ◽  
Deformation Mechanics ◽  
Aided Design ◽  
Element Method

The application of computer-aided design and manufacturing techniques is becoming essential in modern metal-forming technology. Thus process modeling for the determination of deformation mechanics has been a major concern in research . In light of these developments, the finite element method--a technique by which an object is decomposed into pieces and treated as isolated, interacting sections--has steadily assumed increased importance. This volume addresses advances in modern metal-forming technology, computer-aided design and engineering, and the finite element method.

Research of throwing areols of underground pipeline in permafrost

2021 ◽  
pp. 21-30
Author(s):  
T. S. Sultanmagomedov ◽  
◽  
R. N. Bakhtizin ◽  
S. M. Sultanmagomedov ◽  
T. M. Halikov ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Experimental Study ◽  
Finite Element ◽  
Strain State ◽  
Operating Temperature ◽  
Operating Conditions ◽  
Loss Of Stability ◽  
Underground Pipeline ◽  
The Finite Element Method ◽  
Permafrost Thawing

Study is due to the possibility of loss of stability of the pipeline in the process of pumping a product with a positive operating temperature and the formation of thawing halos. The article presents the ways of solving the thermomechanical problem of pipeline displacement due to thawing. The rate of formation of a thawing halo is investigated depending on the initial temperatures of the soil and the pumped product. The developed monitoring system makes it possible to study the rate of occurrence of thawing halos in the process of pumping the product. An experimental study on the formation of thawing halos around the pipeline was carried out on an experimental model. A thermophysical comparative calculation of temperatures around the pipeline on a model by the finite element method has been carried out. Keywords: underground pipeline; permafrost; thawing halo; monitoring; operating conditions; stress–strain state.

scholarly journals The Conical Stones Olive Oil Mill: Analysis through Computer-Aided Engineering

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 255 ◽  
Author(s):  
José Ignacio Rojas-Sola ◽  
Eduardo De la Morena-De la Fuente
Keyword(s):  
Olive Oil ◽  
Computer Aided Engineering ◽  
Operating Conditions ◽  
Frame Structure ◽  
Von Mises Stress ◽  
Maximum Displacement ◽  
Safety Coefficient ◽  
A Value ◽  
Computer Aided ◽  
Von Mises

This article analyzes an olive oil mill formed of four conical stones used in the milling of the olive. To this end, a study of computer-aided engineering (CAE) was carried out using the parametric software Autodesk Inventor Professional, consisting of a static analysis using the finite-element method (FEM) of the three-dimensional (3D) model of the mill under real operating conditions. The results obtained revealed that the conical stones mill was a very robust machine. When studying the assembly in the most unfavorable situation (blockage of one of its millstones), we observed that the element with the highest von Mises stress was the bearing nut, reaching a value of 263.9 MPa, which was far from the elastic limit of cast iron (758 MPa). On the other hand, the machine hardly presented any equivalent deformations or displacements that could jeopardize the operation as a whole. The maximum displacement obtained was 2.494 mm in the inertia flywheel, and the equivalent deformations did not reach 0.1% of the part dimension. Similarly, the element with the lowest safety coefficient (2.87) was the same bearing nut with the highest von Mises stress, although the next element with the second lowest safety coefficient had a value of 8.69, which showed that the set was clearly oversized. These results demonstrate the convenience of redesigning the set in order to resize some of its elements, and that they could have lower safety coefficients of between 2 and 4. After an initial analysis, the resizable elements would fundamentally be those related to the movement transmission system and the frame structure.

The Simulated Calculation and Optimizing Experimental Research of the Residual Stress of the Heavy Rail Straightening

2011 ◽  
Vol 704-705 ◽  
pp. 296-301
Author(s):  
Lin Chen ◽  
Jian Guo Wang ◽  
Ge Li
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Regression Analysis ◽  
3D Model ◽  
Real Field ◽  
The Finite Element Method ◽  
Simulated Calculation ◽  
Heavy Rail ◽  
Better Than

The finite element 3D model of heavy rail roller complex straightening is established by the finite element method in this paper.The straightening process is optimized by orthogonal experimentation and regression analysis. The formative mechanics and the regulation of the residual stress in the process of straightening are researched. The results of the simulation show that: whatever is on the basement of the residual stress or flatness, the new schedule is better than the real field one, residual stress is controlled within 250Mpa.

scholarly journals FEM Calculations in Analysis of Steel Subsea Water Injection Flowlines Designing Process

2018 ◽  
Vol 25 (3) ◽  
pp. 84-93 ◽  
Author(s):  
Michał Wodtke ◽  
Artur Olszewski ◽  
Artur Wójcikowski
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Water Injection ◽  
Operating Conditions ◽  
Theoretical Research ◽  
Sea Waves ◽  
The Finite Element Method ◽  
Strength Parameters ◽  
Coiled Tubing ◽  
Calculation Models

Abstract The article describes the result of theoretical research aimed at assessing the loads and operating conditions of a Coiled Tubing pipeline injecting water, suspended to the mining platform of Lotos Petrobaltic. For this purpose, appropriate calculation models have been developed using the Finite Element Method (FEM), taking into account the nature of the analyzed object and its loads. The analyzes were carried out for two pipes (previously operated and newly proposed) differing in geometrical and strength parameters. The research was carried out for selected directions of load on the pipeline (originating from sea waves) and various variants of attaching the suspended pipeline to the mining platform.

The Statics Analysis of the Lathe Tool Based on Workbench

2014 ◽  
Vol 494-495 ◽  
pp. 478-481
Author(s):  
Zheng Yong Cheng ◽  
Wen Juan Gu ◽  
Xiao Hui Zhang ◽  
Bang Gui He ◽  
Ying Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cutting Force ◽  
3D Model ◽  
The Finite Element Method ◽  
Total Deformation ◽  
3D Design ◽  
Finite Element Software ◽  
Design Software ◽  
Lathe Tool

The 3D model of the lathe tool is established by using the Pro/E of 3D design software, then imported 3D model into the finite element software Workbench, and analyzed its statics using the finite element method, and got the stress figure and strain figure and total deformation figure while the lathe tool undertaking the cutting force, through the analysis it shows that the strength of the lathe tool can meet the processing requirements.

Performance Analysis of Multirecess Angled-Surface Slot-Compensated Conical Hydrostatic Bearing

2013 ◽  
Vol 135 (4) ◽  
Author(s):  
Xiao-Bo Zuo ◽  
Jian-Min Wang ◽  
Zi-Qiang Yin ◽  
Sheng-Yi Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Performance ◽  
Mathematic Model ◽  
Operating Conditions ◽  
Width Ratio ◽  
The Finite Element Method ◽  
Obvious Effect ◽  
Hydrostatic Bearing ◽  
Better Than

Angled-surface slot-compensated hydrostatic bearing (ASHB) is a novel type of hydrostatic bearing which is potentially applicable in rotary tables. However, it has not been sufficiently studied in available literature. In this paper the mathematic model for ASHB was built and solved by the finite element method (FEM). The influence of semicone angle on static and dynamic performance characteristics was theoretically investigated. The simulated results have been compared with that of the traditional fixed slot-compensated hydrostatic bearing (FSHB) on the same geometric and operating conditions. Results show that the performance of ASHB is better than that of FSHB; the studied bearing with a large semicone angle is superior in power consumption; the clearance width ratio of the restricting gap to the bearing gap has an obvious effect on bearing performance.

Sign in / Sign up

Export Citation Format

Share Document