scholarly journals Joint Integrity and Strength CAE Simulation Methodology for PHEV Vehicle Skid Plate Assembly

2021 ◽  
Author(s):  
Satish Uttamrao Muttalwad ◽  
S. B Jadhav
Keyword(s):  
Maximum Load ◽  
Point Load ◽  
High Load ◽  
Simulation Methodology ◽  
Road Profile ◽  
Design Attributes ◽  
Cae Simulation ◽  
Joint Integrity ◽  
Plate Assembly ◽  
Critical Locations

Battery unit skid plate Joint integrity and Strength are key design attributes to ensure Functionality of vehicle. This paper provides an overview of simulation methodology to predict joint integrity and Strength of Battery unit skid plate. Bolt Joint integrity checked against the maximum vertical each wheel spindle loads, which captures maximum bending and twisting. This is the condition in which bolts can experience high load and bolt slippage should check against this load. Skid plate experiences different loading based on drivability and road profile. To simulate severe off road event condition, Maximum load which skid plate experience, applied, as Point load on skid plate at various critical locations to find the deflection and to make sure skid plate is strong enough to protect underneath battery unit.

scholarly journals Voltage collapse point evaluation considering the load dependence in a power system stability problem

2020 ◽  
Vol 10 (1) ◽  
pp. 61 ◽  
Author(s):  
Zaid Garcia Sanchez ◽  
Jose Antonio González ◽  
Gustavo Crespo ◽  
Hernan Hernandez Herrera ◽  
Jorge Iván Silva
Keyword(s):  
Power Systems ◽  
Stability Problem ◽  
Voltage Stability ◽  
Electrical Power ◽  
Maximum Load ◽  
Point Load ◽  
System Stability ◽  
Voltage Collapse ◽  
Load Dependence ◽  
The Stability

<span lang="EN-US">Voltage Stability has emerged in recent decades as one of the most common phenomena, occurrence in Electrical Power Systems. Prior researches focused on the development of algorithm indices to solve the stability problem and in the determination of factors with most influence in voltage collapse to solve the stability problem. This paper evaluates the influence that the load dependence has with the voltage on the phenomenon of the voltage stability and especially on the characteristics the collapse point or instability point. Load modeling used is detailed and comparisons of the results obtained are made with those described in the bibliography and those obtained with commercial software. The results of the load margin are also compared when a constant load or a voltage-dependent load is considered as well as the values obtained at the maximum load point and the point of voltage instability.</span>

The Elastic-Softening Failure of Floating Beams

1988 ◽  
Vol 32 (01) ◽  
pp. 37-43
Author(s):  
Paul C. Xirouchakis
Keyword(s):  
Carrying Capacity ◽  
Maximum Load ◽  
Point Load ◽  
Negative Stiffness ◽  
Load Carrying Capacity ◽  
Perfectly Plastic ◽  
Load Carrying ◽  
Elastic Perfectly Plastic ◽  
The Moment ◽  
Elastic Softening

The solution is presented for an infinite elastic-softening floating beam under a point load. The response depends on two nondimensional parameters: the negative stiffness coefficient that characterizes the descending part of the moment-curvature curve, and the nondimensional softening region half-length. The solution exhibits two important features that the elastic-perfectly plastic solution does not show. First, in certain ranges of parameters, the elastic-softening beam has a clearly defined maximum load carrying capacity. Second, in some other ranges of parameters, the elastic-softening beam has a minimum load or residual strength. The beam stiffens up upon further deformation due to the reactions of the water foundation. Critical softening parameters are calculated that separate stable from unstable behavior.

Simulation of Nano- and Micro-Indentation Behavior of Bone via a Plastic-Damage Model

2008 ◽  
Author(s):  
Jingzhou Zhang ◽  
Timothy Ovaert
Keyword(s):  
Mechanical Properties ◽  
Damage Model ◽  
Maximum Load ◽  
High Load ◽  
Material Degradation ◽  
Bone Specimen ◽  
Naturally Occurring ◽  
Plastic Damage ◽  
Indent Depth ◽  
Micro Indentation

Damage results in a loss of material continuity, which distinguishes it from other types of material degradation. The loss of continuity can have an adverse effect on mechanical properties, and may be manifested in the form of cracks and/or voids. Bone tissue, as a composite material, contains voids and other non-homogeneities that are naturally occurring and distinct from damage. However, when subjected to mechanical loading, such as indentation, further damage accumulation may occur. Figure 1 shows a cross-section of a bovine cortical bone specimen after high-load conical indentation to a depth of 300 μm, resulting in a large permanently deformed region. Nanoindentation, using a Berkovich tip at 10 mN maximum load, was then performed at numerous locations within three defined damage “zones”. Zone 1 is adjacent to the bottom of the indent, defined at 25% of the maximum indent depth. Zones 2 and 3 extend further away, both scaled as a function of the indentation depth, d. Figure 2 shows the variation in Young’s modulus in the three damage zones, averaged over approximately 25 indents per zone. The data suggest that local changes in mechanical properties may occur as a result of compaction of voids or cracks. The purpose of this work, therefore, is to investigate the application of a plastic-damage model for simulation of bone nano- and micro-scale indentation behavior.

scholarly journals Long Term Impact in Reinforced Recycled Concrete Beams Under 9-Month Loading

2019 ◽  
Vol 9 (3) ◽  
pp. 4140-4143
Author(s):  
M. Oad ◽  
A. H. Buller ◽  
B. A. Memon ◽  
N. A. Memon ◽  
S. Sohu
Keyword(s):  
Urban Areas ◽  
Concrete Beams ◽  
Testing Machine ◽  
Maximum Load ◽  
Point Load ◽  
Recycled Concrete ◽  
Partial Replacement ◽  
Green Concrete ◽  
Coarse Aggregates

Green concrete is an active area of research. Structural demolishing waste is a global serious problem, particularly in urban areas. This research paper presents the experimental evaluation of the effect of long term loading on reinforced green concrete beams. Three beams were cast with partial replacement of natural coarse aggregates with demolished old concrete. Three beams were cast with all-natural coarse aggregates to compare the results. The beams were mounted on purpose made frames for 9 months. Deflection, strain and cracking in beams were monitored on a daily basis. After 9 months, the beams were tested until failure in a universal load testing machine under central point load. It was observed that the proposed beams exhibited 3.55% reduction in maximum load caring capacity compared to control specimens. The obtained results show good performance of the proposed green concrete beams under 9-month long term loading.

scholarly journals Pengekang Crossties di Zona Tekan Balok dengan Pembebanan Siklik

2019 ◽  
Vol 24 (2) ◽  
pp. 131
Author(s):  
Yulita Arni Priastiwi ◽  
Iswandi Imran ◽  
Nuroji Nuroji ◽  
Arif Hidayat
Keyword(s):  
Plastic Hinge ◽  
Maximum Load ◽  
Load Cycle ◽  
Point Load ◽  
Compression Zone ◽  
Inelastic Displacement ◽  
Curvature Ductility ◽  
The Face ◽  
Earthquake Load ◽  
Ultimate Condition

Crossties that was installed as a confinement in the compression zone of the beam is proven can increase the ductility, especially when receiving the earthquake load. Using an experimental study, this paper  explains  the effect of crossties which was installed in compression zone of the beam. The model was a simplification of the plastic hinge of the beam. The beam was enlarged in the center of the span and would be loaded with a cyclic of point load, so as to produced the largest moment and shear fields in the face beam of the column. Moreover, the loading was provided by the displacement control system to achieve the ultimate condition. The results show that the crossties significantly increases the displacement and curvature ductility of the beams of 58.7% and 78.2%, respectively, compared to the beam without confinement. In addition, the load cycle formed by cyclic loading increases to 43 cycles in beam with crossties, meanwhile the beam without confinement can only survive up to 33 cycles. The crossties could also increase the cumulative value of inelastic displacement that occurs up to 98%, whereas its  energy dissipation value is six times than the beam without confinement. On the other hand, the maximum load and capacity moment only increase about 6.5%.

Dynamics Simulation Analysis on Hydraulic Excavator Working Mechanism Based on Rigid-Flexible Coupled Modeling

2014 ◽  
Vol 889-890 ◽  
pp. 459-462
Author(s):  
Hai Song Shi ◽  
Li Hua Wang ◽  
Zhu Yang ◽  
Peng Cheng Wang
Keyword(s):  
Simulation Analysis ◽  
Three Dimensional ◽  
Coupled Model ◽  
Maximum Load ◽  
Point Load ◽  
Dynamics Simulation ◽  
Three Dimensional Model ◽  
Coupled Modeling ◽  
Load Curve ◽  
Element Analysis

Taking a type excavator as an example, three-dimensional model was established using CATIA software, using the ADAMS software to the dynamic simulation analysis; get the movable arm hinged point load curve. The maximum load into ANSYS finite element analysis was carried out on the derrick structure, derived from ANSYS MNF file imports ADAMS to get the coupled model and dynamics analysis, get the time-varying curve working device. Results show that the coupled model is more in line with the actual, work can be more fairly reflect device performance, can provide the basis for further optimization of the structure of excavator.

Maximum Load Capacity Profiles for Gas Thrust Bearings Working Under High Compressibility Number Conditions

1998 ◽  
Vol 120 (3) ◽  
pp. 571-576 ◽  
Author(s):  
I. Iordanoff
Keyword(s):  
Load Capacity ◽  
Maximum Load ◽  
High Load ◽  
Two Dimensional ◽  
One Dimensional ◽  
Thrust Bearings ◽  
Constant Slope ◽  
Compressibility Effects ◽  
Composite Bearing ◽  
Commercial Equipment

To meet the requirements of new commercial equipment, performances of air thrust bearings always have to be improved. This work is concerned with the research of the converging profile that will give high load capacities. When compressibility effects increase (when the compressibility number Λ is over 50), a one-dimensional study shows that the best bearing is a composite bearing, i.e., one in which the leading portion has a constant slope followed by a surface parallel to the runner. For each compressibility number, entrance film thickness H1 and the transition angle θ1 define the best profile. In a two-dimensional study, for compressibility numbers from 10 to 1000, comparison in term of load capacity is made between tapered and composite profiles. It outlines the better load capacity of the composite bearings and confirms the good results obtained by Heshmat (1983) and Gray (1981) with such profiles.

scholarly journals Enhanced load-carrying capacity of hairy surfaces floating on water

2014 ◽  
Vol 470 (2165) ◽  
pp. 20130832 ◽  
Author(s):  
Yahui Xue ◽  
Huijing Yuan ◽  
Weidong Su ◽  
Yipeng Shi ◽  
Huiling Duan
Keyword(s):  
Free Energy ◽  
Carrying Capacity ◽  
Mechanical Stability ◽  
Water Repellency ◽  
Maximum Load ◽  
Surface Hydrophobicity ◽  
High Load ◽  
Load Carrying Capacity ◽  
Water Striders ◽  
Load Carrying

Water repellency of hairy surfaces depends on the geometric arrangement of these hairs and enables different applications in both nature and engineering. We investigate the mechanism and optimization of a hairy surface floating on water to obtain its maximum load-carrying capacity by the free energy and force analyses. It is demonstrated that there is an optimum cylinder spacing, as a result of the compromise between the vertical capillary force and the gravity, so that the hairy surface has both high load-carrying capacity and mechanical stability. Our analysis makes it clear that the setae on water striders' legs or some insects' wings are in such an optimized geometry. Moreover, it is shown that surface hydrophobicity can further increase the capacity of a hairy surface with thick cylinders, while the influence is negligible when the cylinders are thin.

An in vitro Comparison of Two Replacement Techniques Utilizing Fascia Lata after Cranial Cruciate Ligament Transection in the Dog

1993 ◽  
Vol 06 (02) ◽  
pp. 85-92 ◽  
Author(s):  
G. L. Coetzee
Keyword(s):  
Femoral Condyle ◽  
Cruciate Ligament ◽  
Maximum Load ◽  
Fascia Lata ◽  
Patellar Ligament ◽  
Cross Sectional ◽  
Cranial Cruciate Ligament ◽  
Replacement Technique ◽  
Over The Top

SummaryThe immediate postoperative biomechanical properties of an “underand-over” cranial cruciate ligament (CCL) replacement technique consisting of fascia lata and the lateral onethird of the patellar ligament, were compared with that of a modified intra- and extracapsular “under-and-over-the-top” (UOTT) method. The right CCL in twelve adult dogs was dissected out and replaced with an autograft. The contralateral, intact CCL served as the control. In group A, the graft was secured to the lateral femoral condyle with a spiked washer and screw. In group B the intracapsular graft was secured to the lateral femoro-fabellar ligament, and the remainder to the patellar tendon. Both CCL replacement techniques exhibited a 2.0 ± 0.5 mm anterior drawer immediately after the operation. After skeletonization of the stifles, the length and cross-sectional area of the intact CCL and CCL substitutes were determined. Each bone-ligament unit was tested in linear tension to failure at a fixed distraction rate of 15 mm/s with the stifle in 120° flexion. Data was processed to obtain the corresponding material parameters (modulus, stress and strain in the linear loading region, and energy absorption to maximum load).The immediate postoperative structural and material properties of the “under-and-over” cranial cruciate ligament replacement technique with autogenous fascia lata, were compared to that of a modified intra- and extracapsular “under-and-over-the-top” (UOTT) method. The combined UOT T technique was slightly stronger (6%), but allowed 2.8 ± 0.9 mm more cranial tibial displacement at maximum linear force.

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