Design and Static Stress Analysis of Double Wishbone Suspension

Double Wishbone suspension systems are by far the best choice of suspension systems recommended for sports vehicles. It is more stable and stiffer when compared to the other suspension geometries. In this report a brief study of how a double-wishbone suspension system acts under loading conditions when traveling at high speeds is presented, also the forces acting on its components are analysed, and post-processed results are discussed. The geometry of the whole suspension is designed on SolidWorks and analysis is performed on Ansys software. Further the results from the analysis are studied based on material selection and various analysis methods. Finally, the proposed suspension system is concluded safe to use when the values of Equivalent stress, Total Deformation, and Factor of Safety were measured and under threshold limits. Keywords: double wishbone suspension, static structural, suspension system, analysis, deformation, Ansys, stress analysis, FOS, FEA, structural analysis.

Numerical analysis of WaveOne Gold and 2Shape endodontic files during root canal treatment

This study aims to develop and analyse a finite element model of the endodontic nickel-titanium (NiTi) instrument during the root canal treatment (RCT). The 3D model of the tooth and the endodontic instrument has been created using computer-aided design software. The nonlinear explicit dynamic analysis in the CAE package (ANSYS) has been used to analyse the mechanical behaviour of endodontic instruments such as total deformation, equivalent elastic strain, and equivalent stress during canal preparation. The mechanical behaviour of three commercially available endodontic NiTi alloy instruments such as WaveOne Gold (WOG), 2Shape 1 (TS1) and 2Shape 2 (TS2) endodontic files was evaluated using FEA. Consequently, the effect of deformation, equivalent stress and equivalent elastic strain on endodontic files during cleaning and shaping are investigated and compared. The results show that the total deformation and equivalent elastic strain are maximum in the TS1 endodontic file in comparison to TS2 and WOG files. Graphical abstract [Formula: see text]

Biomechanical Behavior Evaluation of a Novel Hybrid Occlusal Splint-Mouthguard for Contact Sports: 3D-FEA

Background: Orofacial injuries are common occurrences during contact sports activities. However, there is an absence of data regarding the performance of hybrid occlusal splint mouthguards (HMG), especially during compressive loading. This study amid to evaluate the biomechanical effects of wearing a conventional custom mouthguard (MG) or the HMG on the teeth, bone, and the device itself. Methods: To evaluate the total deformation and stress concentration, a skull model was selected and duplicated to receive two different designs of mouthguard device: one model received a MG with 4-mm thickness and the other received a novel HMG with the same thickness. Both models were subdivided into finite elements. The frictionless contacts were used, and a nonlinear analysis was performed simulating the compressive loading in occlusion. Results: The results were presented in von-Mises stress maps (MPa) and total deformation (mm). A higher stress concentration in teeth was observed for the model with the conventional MG, while the HMG design displayed a promising mechanical response with lower stress magnitude. The HMG design displayed a higher magnitude of stress on its occlusal portion (7.05 MPa) than the MG design (6.19 MPa). Conclusion: The hybrid mouthguard (HMG) reduced (1) jaw displacement during chewing and (2) the generated stresses in maxillary and mandibular teeth.

Design and analysis of biomimetics based excavator bucket and tooth

Within the scope of this paper, various bucket tooth designs and a biomimetic bucket design were created in order to produce a solution on digging efficiency which is one of the general problems of construction machines. These designs were inspired by giant anteater and American badger front claws. The inspiration aspect was diversified by integrating the paw and claw curves of the giant anteater and by bringing American badger claws into the design in different ways. Furhermore, the designed biomimetic bucket alternatives were compared between each other and the standard bucket equipment used in the market by making a computer aided static analysis. The compared criteria were the equivalent stress and total deformation formed on the bucket itself, the excavation equipment and the excavated soil. According to the analysis results, when the bucket tooth named P2 is mounted to the standard bucket, it has 42% lower Von-Mises stress on than standard bucket tooth. Additionally, it is exposed 4,7% less total deformation than standard tooth. Also, in terms of maximum Von-Mises stress formed on the soil model, P2 causes 17,5% greater stress than the standard bucket tooth.

Modelling the effect of vacuum on the morphology for large format detector arrays

Rapid growth in the size and performance of the detector arrays unavoidably faced the morphology concern which was susceptible to peripheral exertions. Ex-situ interferometer characterization was carried out to modelling the effect of vacuum on the morphology whose results, in turn, was used to build the ANSYS model. The modelled total deformation explained the physical phenomena very well.

Steady State Thermal Effect on Static Characteristic of Copper Roller Shaft

The static analysis of a copper roller shaft is performed. The copper roller shaft consists of bushing, pen roll and roller. All of those components g4bconsist of different materials. Thermal steady state and statical analysis is performed in order to investigate the thermal effect of high temperature copper slab on the roller shaft. The copper slab temperature is 1200 OC. Based on this work obtained that the maximum total deformation is 0.0050523 m, maximum equivalent stress is 41600 MPa, maximum life cycle is 1011, total heat flux maximum is 879910 W/m2 and the maximum damage occur in the pen roll component.

Ferrocement as a Retrofitting Material for Beam Column Joint

Structure safety is of utmost importance in modern days. Now- a- days ferrocement is gaining popularity as a retrofitting material due to ease of its application and availability. The most critical location of failure in any structure is beam column joint. The aim of this paper is to analyse the effect of retrofitting on beam column joint using ferrocement as a retrofitting material. Square wire mesh and triangular wire mesh was used for retrofitting beam column joint. Beam column joint is designed using ductile detailing code IS 13930:2016. Axial and reverse cyclic displacement load is applied on the specimen. Further unstrengthen and strengthened specimen were analysed using ANSYS software. A comparative study was done and it was concluded that after retrofitting, the specimen shows considerable decrease in total deformation. It shows that retrofitted beam column joint was more stable than the unstrengthened beam column joint. So, to increase the serviceability of any structure it is recommended to retrofit the structure. Keywords: BCJ, ferrocement, wire mesh, retrofitting

Titanium Alloy is Best Material for Roller Shaft in Sugar Mill

In sugar industry, the sugar processing done in different sections, but to increase total crushing per day (TCD) capacity, the milling section takes a vital role in the sugar industry. The sugar industry aims to extract the maximum amount of juice from sugarcane. In the milling section, the processed sugarcane is fed in between the three-roller shaft from the different arrangements, there are different loads applied on each part roller shafts. When load between all rollers varies then there is a chance of bending it is analyzed to check the roller shaft condition. The modeling is done on roller shaft with the help of CATIA V5. After modeling, we analyze the condition of the rollers, when different stress or forces are applied to different sections of the roller shaft it analyzed with the help of Finite element method using ANSYS WORKBENCH software. We were selecting titanium alloy materials for the roller shaft to analyze the variation in results. When comparing the calculated and software-based results using Maximum Shear stress and Total deformation for top, feed, and discharge rollers said the roller shafts are safe to use in the sugar industry and titanium alloy is the best material for these roller shafts.

Development of a Double Row Tractor Operated Yam Minisett Planter

Drudgery in manual yam minisett planting was identified as a major constraint facing yam cultivation in Ghana. The main objective of the study was to develop a double row yam minisett (DRYM) planter using Finite Element Analysis (FEA). A potato planter was adopted and modified to suit the design of DRYM planter. The main task was to perform 3D modeling of the planter major components using FEA method. Analysis of systems (ANSYS) software was used for FEA. Minisett and soil physical properties were factored into the design processes. Total deformation and equivalent (Von-Mises) stress were 0.442 mm and 7.37 MPa for hopper; 0.01 mm and 9.18 MPa for ridger bottom and that of furrow opener were 1.8-0.6 mm and 6.27 MPa, respectively. Maximum total deformation and equivalent (Von-Mises) stress were below material specification of 50 mm and 250 MPa for structural steel, and 20 mm and, 440 MPa for mild steel, respectively. The study concluded that the entire design was within the material property and permissible stress limits of the materials used. Yam planter development will enhance farmer satisfaction.

Modeling of human reaction selection following the arrival of an event in the brain

This work proposes a mathematical model about how a reaction is created in the human brain in responseto a particular incoming Information/Event using quantum mechanics and more precisely path integrals theory.The set of action potentials created in a particular neuron N2 is a result of temporal and spatial summationof the signals coming from different neighboring neurons Nx with different dendrite-paths. Each dendritepathof N2 is assumed to be determined by its respective synapse with its neurotransmitters and therefore tohave its particular action S due to its respective neurotransmitters types (excitatory or inhibitory) and etc. Anexternal incoming signal information being initially modulated by recepetor neurons (in eyes, ears...) travelsthrough the neighboring neurons that are linked to the excited receptor neurons. A potential reaction responsesare subsequently created thanks to a final deformed signal in the motor neurons by all the correlated neuralpaths. The total deformation at each neuron is created by different incoming dendrite-paths and their structures(inhibitory or excitatory neurotransmitters and their type), and of course the existence or not of the signal andits frequency coming from each path. Using path Integrals theory, we compute the probability of existence ofthe signal-Information or the potential reaction to the incoming information at each neuron. In this paper wecompute how much the signal-Information has been distorted between two neighboring linked neural pointsincluding if it arrives or not to the neigboring neurons. We propose an Information entropy similar to Shannonone and we demonstrate that this entropy is equivalent to timespace curvature in the Brain.