scholarly journals LOCAL STRENGTH OF BEAM TO COLUMN CONNECTIONS WITHOUT CONTINUITY PLATES

2014 ◽  
Vol 79 (697) ◽  
pp. 419-426
Author(s):  
Satoshi KITAOKA ◽  
Tsuyoshi TANAKA
Keyword(s):  
Local Strength ◽  
Continuity Plates

scholarly journals Local strength properties of steel bars as random functions

2021 ◽  
Vol 300 ◽  
pp. 124021
Author(s):  
Andrzej Machowski ◽  
Mariusz Maslak ◽  
Michal Pazdanowski
Keyword(s):  
Strength Properties ◽  
Random Functions ◽  
Local Strength ◽  
Steel Bars

Stability Analysis of Dam Slope by Double Safety Factors of Dynamic Local Strength Reduction Method

2015 ◽  
Vol 744-746 ◽  
pp. 593-596
Author(s):  
Yuan Meng
Keyword(s):  
Internal Friction ◽  
Reduction Method ◽  
Failure Process ◽  
Friction Angle ◽  
Strength Reduction ◽  
Internal Friction Angle ◽  
Material Strength ◽  
Strength Reduction Method ◽  
Strength Parameters ◽  
Local Strength

When calculating the dam slope failure process, traditional strength reduction method doesn't consider the difference of decay rate between cohesion and internal friction angle and discount the strength parameters for all elements. This paper uses two different reduction factors for material strength parameters, slope cohesion and internal friction angle. Based on the yield approach index criterion, we change the reduction region in time and put forward a double safety factor of dynamic local strength reduction method for engineering analysis of dam slope stability.

scholarly journals A Structural Grammar Approach for the Generative Design of Diagrid-Like Structures

Buildings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 90
Author(s):  
Francesco Cascone ◽  
Diana Faiella ◽  
Valentina Tomei ◽  
Elena Mele
Keyword(s):  
Minimum Weight ◽  
Three Dimensional ◽  
Tall Buildings ◽  
Shear Stiffness ◽  
Design Strategy ◽  
Design Criterion ◽  
Generative Design ◽  
Building Models ◽  
Local Strength ◽  
And Performance

An innovative generative design strategy, based on shape grammar, is proposed for the minimum-weight design of diagrid tall buildings. By considering the building as a three-dimensional vertical cantilever beam with a tubular section under horizontal load, it is evident that bending and shear stiffness demands vary along the width and elevation of the building. Further, while the structural design of tall buildings is usually governed by stiffness, the predominant design criterion for diagrids could be the local strength demand, especially for low slenderness values, thanks to the inherent rigidity of the triangular pattern. Starting from these considerations, in this paper, a generative design strategy is proposed, able to find diagrid patterns that accommodate the differentiated stiffness demand along width/elevation and satisfy the predominant design criterion, stiffness or strength. The design strategy is applied to tall building models characterised by different slenderness values. The comparison to diagrid patterns analysed in previous literature works in terms of structural weight and performance parameters highlights the effectiveness of the design strategy and the efficiency of the generated patterns.

Design and Analysis of a Tow Truck’s Lifting Organ

2014 ◽  
Vol 644-650 ◽  
pp. 137-141
Author(s):  
Guo Sheng Zhang ◽  
Wei Zhou ◽  
Ye Chen ◽  
Jian Qiang Gong
Keyword(s):  
Mechanical Design ◽  
Three Dimensional ◽  
Operation Condition ◽  
Element Analysis ◽  
Vehicle Accidents ◽  
Local Strength ◽  
The Finite Element Analysis ◽  
Design Software ◽  
Mechanics Characteristics ◽  
Game Type

According to the super large or heavy vehicle accidents existing wrecker cannot complete the wrecker rescue mission independent problems, puts forward the design of a practical game type crane wrecker. The hoisting mechanism as the research object, the traditional mechanical method is designed and calculated, then the three-dimensional entity model using 3D mechanical design software Solidworks, and imported into the finite element analysis software ANSYS to analyze the static mechanics characteristics of the structure, to improve the local strength of short position. On this basis, a lifting test vehicle prototype, rated load operation and overload operation condition test, and measure its subsidence. With the analysis of the experiment results, show that the design truck lifting organ can meet the demand of the technology.

scholarly journals Process-Related Changes in Polyetherimide Joined by Friction-Based Injection Clinching Joining (F-ICJ)

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1027
Author(s):  
André B. Abibe ◽  
Marilia Sônego ◽  
Leonardo B. Canto ◽  
Jorge F. dos Santos ◽  
Sergio T. Amancio-Filho
Keyword(s):  
Mechanical Strength ◽  
Physical Aging ◽  
Mechanical Performance ◽  
Base Material ◽  
Chain Scission ◽  
Size Exclusion ◽  
Lap Shear ◽  
Local Strength ◽  
Exclusion Chromatography ◽  
Static Mechanical

This work presents a comprehensive study on the effects of the Friction-based Injection Clinching Joining (F-ICJ) process on the microstructure and local properties of the stake head. The manuscript evaluates the consequences on the quasi-static mechanical performance of hybrid joints of amorphous polyetherimide (PEI) with aluminium AA6082. Through an overlay of microhardness map on a cross-polarized transmitted-light optical microscopy (CP-TLOM) image, two lower-strength microstructural zones in the PEI stake head were observed: a plastically-deformed zone (PDZ) and a thermo-mechanically-affected zone (PTMAZ). When compared to the base material, PDZ and PTMAZ have a reduction of 12%–16% and 8%–12%, respectively, in local mechanical properties. The reduced local strength was associated with distinct volumes of loosely packed PEI chains with unsteady chain conformation and thus larger free volume in the affected regions. The mechanical strength reduction is reversible through physical aging by thermal annealing the joints, which additionally shows that process-induced thermomechanical degradation of PEI by chain scission, as evidenced by size exclusion chromatography (SEC) analysis, does not appear to affect local mechanical strength. An evaluation of typical loading regimes of staked joints in lap shear (average ultimate force of 1419 ± 43 N) and cross tensile (average ultimate force of 430 ± 44 N) testing indicates that the process-induced changes of PEI do not compromise the global mechanical performance of such a structure. These findings provide a better understanding of the relationships between processing, microstructure, and properties for further F-ICJ process optimization.

The Analysis of the Static Mechanics for the Vehicle Frame

2015 ◽  
Vol 733 ◽  
pp. 505-508
Author(s):  
Wei Cheng Wu
Keyword(s):  
Raw Materials ◽  
Lightweight Design ◽  
Mechanical Analysis ◽  
Production Costs ◽  
Element Analysis ◽  
The Road ◽  
Automobile Assembly ◽  
Local Strength ◽  
Solid Works ◽  
Strength And Stiffness

As an important part of the automobile assembly, automobile frame bears the complex loads from the road and loaded, and be installed car assembly as the carrier, and thus the frame strength and stiffness in the car overall played a very important role in the design. This article use Solid Works to design a frame of a truck, and focus on using the finite element analysis software ANSYS study mechanical analysis and study of the vehicle frame. Here discussed the pure bending conditions and reverse the conditions of static strength, the static stiffness analysis. The analysis showed that the frame of the stress value is less than the ultimate strength of materials to meet the design requirements, but the intensity is too large, so the economy is relatively poor, while considering the local strength of the frame. According to this characteristic of the truck frame, this paper presents a program on the frame lightweight design, the results of optimization makes the weight of frame to reduce, saving raw materials, lowering production costs, improving fuel economy .

Estimation of Ultimate Wave Height Due to Strength Criteria for Vessels During Onetime Trip

2007 ◽  
Author(s):  
Gennadiy V. Egorov ◽  
Vitaly V. Kozlyakov
Keyword(s):  
Shallow Water ◽  
Wave Height ◽  
Strength Criteria ◽  
Local Strength ◽  
Definition Of ◽  
Constrained Conditions ◽  
Significant Distance ◽  
Paper Method ◽  
Probability Wave ◽  
Classification Society

Vessels that works on shelf in constrained conditions and in shallow water very often are of restricted navigation area vessels type. Operation area and place of building for such vessels may be situated on significant distance from each other so onetime trip outside of allowable by Classification Society sailing regions. In this paper method of definition of minimum allowable value of 3% probability wave height due to overall and local strength criteria for hulls of restricted navigation area vessels (RNAV) is substantiate. This method allows to carry out onetime voyage projects for sailing outside of allowable sailing regions.

Non-Linear Finite Element Drop Collision Simulation of the Anti-Collision Device Hitting a Bridge Pile Cap

2010 ◽  
Author(s):  
Sheng Peng ◽  
Weiguo Wu ◽  
Jin Pan ◽  
Ziyu Xia
Keyword(s):  
Finite Element ◽  
Size Control ◽  
Failure Criteria ◽  
Collision Process ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Fea Model ◽  
Local Strength ◽  
Non Linear ◽  
Pile Cap

This paper recites the non-linear dynamic finite element simulation to the whole collision process of the collision between the anti-collision equipment and the bridge pile cap in the rough waves and surge with an example, basing on the solving technique of explicit non-linear finite element method and the mechanism in bridge-anti-collision equipment collision, including the process of building a reasonable FEA model and the numerical calculation and analysis of the collision process in considering the hydrodynamics influence by non-linear finite element analysis code MSC.Dytran / Patran. Described in detail attached to the collision analysis needs to consider such as determination of element size control, the selection of material models and failure criteria, the definition of contact and friction and so on. It is pointed that local strength of the anti-collision equipments and the bridge pile caps, as well as the collision impact force in the rough seas and surge. On the basis of numerical simulation, the general laws and characteristics of the impulse response of collision are achieved, which can be extended to the design of the bridge anti-collision devices and reinforcement for pier caps with providing a range of meaningful conclusions.

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