To Study and Analyze the Load Acting and Generated Stresses on Supporting Structure for Mobile Vaporizer

7/21/2019 To Study and Analyze the Load Acting and Generated Stresses on Supporting Structure for Mobile Vaporizer

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IJIRST – International Journal for Innovative Research in Science & Technology| Volume 2 | Issue 1 | June 2015 ISSN (online): 2349-6010

All rights reserved by www.ijirst.org 45

To Study and Analyze the Load Acting andGenerated Stresses on Supporting Structure for

Mobile Vaporizer

Prof. C. K. Motka Someshvar N. Chauhan Associate Professor PG-Machine Design Department of Mechanical Engineering Department of Mechanical Engineering

KIT & RC, Kalol KIT & RC, Kalol

Abstract

A vaporizer is a device used to vaporize the active ingredients of plant material, commonly cannabis, tobacco, or other herbs or blends for the purpose of inhalation. However, they can be used with pure chemicals when mixed with plant material.This project works on mainly on load acting and analyzing the effect of stress generation on mobile vaporizer supporting structure.For that a experiment is to be carried out on mobile vaporizer and result to be analyzed. Further, by taking into consideration theresult obtained and feasibility of application, a solution to increase the efficiency is to be suggested and applied.Keywords: Backhoe Loader; Stress Analysis; FEM

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I. INTRODUCTION

A device which is used to vaporize the active ingredients of plant material, commonly cannabis or other herbs or blends for the purpose of inhalation is known as vaporizer. However, it is used with pure chemicals when mixed with plant material.Demand ofnatural gas increasing day to day because of it is one type of natural fuel. Japan is one of the consuming country , far from gas

producing regions, natural gas is received as liquefied natural gas (LNG) (approximately -160 ℃ ), warmed up to normaltemperature to be degasified, and is used as fuel for city gas and power generation.Kobe steel is a leading manufacturer of LNGvaporizer; it is actively developing its business in Japan and overseas. The recent trend is for the number of projects to increasein countries and in areas where the environment and heat sources are different from the traditional ones.

II. M ETHODOLOGY

Mobile Vaporizer is a heat exchange process that is control by statistic approach. This thesis work is carried out step by step asdesign of experiment first and then the data will analyze and optimize. The main step of the methodology cover:

1) Design of experiment2) Conduction of experiment3) Collection of data4) Related measurement5) Analysis of data6) Optimization of data

This step covers the following topics:-1) Selection of Mobile Vaporizer2) Decide: Number of parameters, Number of levels, Output Measure3) Note down the Measurements

4)

Let all Parameters and its Measures together for analysis

III. DESIGN OF EXPERIMENT

The main advantages of design of experiment are1) The Number of Experiments are reduced to selected numbers by appropriate selection method2) Time and cost of experiments is reduced3) The data obtain from design of experiment can be easily analyze4) Optimal setting of the parameters can be found out.5) Qualitative estimation of parameters can be made.6) Experimental error and lack of fit can be calculated



To Study and Analyze the Load Act ing and Generated Stresses on Supporting Structure for Mobile Vaporizer (IJIRST/ Volume 2 / Issue 1 / 007)


IV. DESIGN CALCULATIONS : PAD EYES

Fig. 1: Ped Eyes

Rating or maximum gross mass of the offshore container including permanent equipment and its cargo but excludinglifting set = Wt kg

Shortest Distance from Centre of Bolt hole to Edge of Pad eye = H mm Bolt hole Diameter = Dh mm Pad eye thickness = t mm number of sling legs = 4 nos angle of sling leg from vertical = 45 deg standard acceleration of gravity = 9.81 m/s 2 Resulting Sliding Load in N = (3*R.*g)/((n-1)*COS(v)) Minimum specified yield strength of the pad eye material = 218 n/mm Tear out stress = (3*RSL)/(2*H*t-Dh*t) Contact stress = 23.7*(RSL/(Dh*t))^0.5

V. T IPPING C ALCULATIONS :

Container to have an overturning stability in any direction for an angle of 30°

Case -01: T ipping Al ong the L onger Side :A.

Fig. 2: Case -1

Case -02: T ipping Al ong the Shorter Side:B.

Fig. 3: Tipping of Frame





VI. FEA OF MOBILE VAPORIZER SUPPORTING STRUCTURE

Scope of A nalysis:A.The Analysis report presented herewith deals with the Finite Element Analysis of the mobile vaporizer supporting structure. It

presents the load acting and generated stress analysis of supporting structure.

Geometry:B.

Fig. 4: 3D Geometry of Mobile Vaporizer Supporting Structure

Di ff erent L oad Case:C.In this FEA document two Load cases are considered as mentioned below:

1) LOAD CASE-01: Lifting the container through lifting set2) LOAD CASE-02: Lifting the container through fork lift

In both the load cases, the dead weight of vaporizer of approximately 3 tons along with self weight of Frame structure areconsidered as acting loads in the Transport condition.

VII. M ESH DETAILS

Table 1Fe Model Summary

TABLE 5.1 – FE Model Summary

Description QuantityTotal Nodes 656949

Total Elements 197137

Total Body Elements 169458

sTotal Contact Elements 27679

Table - 2Element Type Summary

TABLE 5.2 – Element Type Summary

Generic Element Type Name Ansys Name Description10 Node Quadratic Tetrahedron Solid187 10 Node Tetrahedral Structural Solid20 Node Quadratic Hexahedron Solid186 20 Node Structural Solid

20 Node Quadratic Wedge Solid186 20 Node Structural Solid

20 Node Quadratic Pyramid Solid186 20 Node Structural Solid





Fig. 5:

Fig. 6: Boundary Conditions1)

Boundary Conditi on F or L oad Case 1:A.For parts joined by welding, a bonded contact has been defined.For simulating the lifting condition a fixed support has been applied at the Holes of the Lifting lugs.

Fig. 7: Fixed support at Lifting Lug hole

Boundary Conditi on for L oad Case 2:B.For parts joined by welding, a bonded contact has been defined.

Fig. 8: Meshed Classic

Boundary Conditi on for L oad Case 3:C.For parts joined by welding, a bonded contact has been defined.







Fig. 13: Dead Weight of Vaporizer equally distributed on the top surface of clamp LOAD CASE 33)

The loads applied to the structure are as mentioned below:

Fig. 14: Self Weight of the Structure

Fig. 15: Dead Weight Of Vaporizer Along With Fluid Weight Equally Distributed On The Clamp

Result Of L oad Case 1:D.The results are expressed in terms of two parameters i.e. Total deformation and equivalent Von Mises Stress.Total Deformation Plots(Unit mm)Figure-6.2 and 6.2 shows the Total deformation plots for the structure.





Fig. 16: Total Deformation Plots

Equivalent Von Misses Stress Plots (Unit MPa)Figure-6 shows the Equivalent Von Misses Stress plots for the structure

Fig. 17: Equivalent Von Mises Stress Plots

Result of L oad Case 2:E.The results are expressed in terms of two parameters i.e. Total deformation and equivalent Von Mises Stress.Total Deformation Plots (Unit mm)Figure-9(a) and 9(b) shows the Total deformation plots for the structure


Equivalent Von Mises Stress Plots (Unit Map)Figure-10(a) to 10(b) shows the Equivalent Von Mises Stress plots for the structure

Fig. 20: Equivalent Von Mises Stress Plots





Result of L oad Case 3:F .


Result of L oad Case 4:G.

Fig. 22: Result of Load Case

VIII. C ONCLUSIONS

L oad Case 1:A. Maximum Total Deformation:4)

The total deformation in the structure is 2.82 mm.Considering the loads acting, size of the structure and the criticality of the Load case considered, the deformation can beaccepted.

Maximum Equivalent Von Mises Stress:5)The maximum stresses occurring on the structure are 127.94MPa.The maximum allowable stresses for the structural members made of Structural steel are 212.5MPa and for aluminum are 55.25Mpa,

The material for fin bracket is Aluminum 6063-T5, however as per the Table 3-5 in DNV 2.7-1, data for T5 is not available.So we have considered the data for aluminum 6063-T4 for the calculation of maximum allowable stress considering a highersafety factor.As can be seen the maximum stresses arising in the structural steel members are well below the maximum allowablestresses and hence the structure is safe for the Load case considered.

L oad Case 2:B. Maximum Total Deformation:1)

The total deformation in the structure is 3.11mm.Considering the loads acting, size of the structure and the criticality of the Load case considered, the deformation can beaccepted.

Maximum Equivalent Von Mises Stress:2)The maximum stresses occur on the structure are 192.87MPa.

The maximum allowable stresses for the structural members made of Structural steel are 212.5MPa and for aluminum are55.25 Mpa,





The material for fin bracket is Aluminum 6063-T5, however as per the Table 3-5 in DNV 2.7-1,data for T5 is not available. Sowe have considered the data for aluminum 6063-T4 for the calculation of maximum allowable stress considering a higher safetyfactor.

As can be seen the maximum stresses arising in the structural steel members are below the maximum allowable stresses andhence the structure is safe for the Load case considered.

L oad Case 3:C. Maximum Total Deformation:3)

The total deformation in the structure is 6.69mm.Considering the loads acting, size of the structure and the criticality of the Load case considered, the deformation can beaccepted

Maximum Equivalent Von Mises Stress:4)The maximum stresses occurring on the structure are 262.39MPa.The maximum allowable stresses for the structural members made of Structural steel are 212.5MPa and for aluminum are55.25Mpa.

The material for bracket is Aluminum 6063-T5, however as per the DNV standard Table 3-5, datafor T5 is not available, sowe can consider the aluminum 6063-T4data for the calculation of maximum allowable stress considering the factor of safety.As can be seen the maximum stresses arising in the structural steel members are higher than the maximum allowable stresses,however as can be seen in the stress plot, they are coming at the corner of the Box sectionand thus can be neglected as stressconcentration.

L oad Case 4:D. Maximum Total Deformation:1)

The total deformation in the structure is 6.495mm. As it can be noted from the results achieved, for the loading applied on thestructure it will be neglected considering size of structure.

Maximum Equivalent Von Mises Stress:2)The maximum stresses in the structure are 403.7MPa and coming at the corner of the Box section. For the particular loadingconcerned, the structure is safe

R EFERENCES

[1] Song Mengjie , Pan Dongmei , Li Ning , Deng Shiming Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon,Hong Kong Special Administrative Region b School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou,Guangdong, china.

[2] Sheila b ogama, Sarah j Moore, Marta f. Maia Environmental Thematic Group, Ifakara Health Institute, P.O. Box 53, Ifakara, Morogoro, United Republicof Tanzania Department of Disease Control, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, United Kingdom.

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To Study and Analyze the Load Acting and Generated Stresses on Supporting Structure for Mobile Vaporizer