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% SHAFT DESIGN % ------------------------------------------------------------------------- % Calculates the minimum diameter needed for the shafts of the pallet % % FBD % | % | % ---| | % | \|/ % |------------------------------------------- % | % ---| % % ------------------------------------------------------------------------- close all; clear; clc %% Constants % Disc thickness (same as shaft length) (m) t = 0.12717; % Disc mass (kg) m = 3833; % number of shafts N = 2; % Applied point load (N) F = (m * 9.81) / N; % Maximum bending moment on shaft (at fixed end) (Nm) M = F * t; % Desired safety factor n = 2; % Maximum allowable diameter of shaft (m) Dmax = 0.0664; % Yield strength of material (Pa) (currently using A36 steel) Sy = 250e6; %% Equations % Moment of inertia of shaft (m^4) I = @(D_) pi * D_.^4 / 64; % Axial stress on shaft (Pa) sigma = @(D_) M * (D_/2) ./ I(D_);

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% Shear stress on shaft (Pa) tau = @(D_) 4 * F ./ (3 * pi * (D_ / 2).^2); % Principle stress (Pa) Note: - stress in y can be neglected (sy = 0) s1 = @(D_) max(abs([ 0.5 * sigma(D_) + sqrt((0.5 * sigma(D_)).^2 + tau(D_).^2);... 0.5 * sigma(D_) - sqrt((0.5 * sigma(D_)).^2 + tau(D_).^2) ])); % Von Mises Stress sv = @(D_) sqrt(s1(D_).^2 + 3 * tau(D_).^2); %% Calculate minimum diameter f = @(D_) (Sy ./ sv(D_)); D = fzero(@(D_) f(D_) - n,0.1); fprintf('The minimum required diameter for a safety factor of %.2f is %.2f mm.\n',n,D * 1000); %% Plot figure; hold on fplot(f,[ 0.001 0.1 ],'k-','HandleVisibility','off'); plot(D,f(D),'ro'); plot([ Dmax Dmax ],[0 f(0.1) ],'b--'); grid on; grid minor legend('Selected Diameter','Maximum Diameter','Location','Northwest'); xlabel('Shaft Diameter (m)'); ylabel('Safety Factor'); title('Safety Factor vs Shaft Diameter');

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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Syntax: costAnalysis.m % Description: Cost Analysis for Team Rotordynamics % % Inputs: none % % Outputs: none % % Author: Parth Patki % Course: ME 4182-A % Year: Fall 2019 % Instructor: Dr. Yan Wang % Institute: Georgia Tech %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% ------------------------ BEGIN CODE ------------------------- close all; clear; clc % cart [qty 1] cost per revision cart_rev = []; cart_rev(1) = 1124.37; % $ cart_rev(2) = 1860.63; % $ cart_rev(3) = 1878.76; % $ cart_rev(4) = 1878.76; % $ cart_rev(5) = 2090.10; % $ cart_rev(6) = 2090.10; % $ cart_rev(7) = 2224.94; % $ % pallet [qty 1] cost per revision pallet_rev = []; pallet_rev(1) = 9368.84/2; % $ pallet_rev(2) = 9368.84/2; % $ pallet_rev(3) = 2813.52; % $ pallet_rev(4) = 2903.12; % $ pallet_rev(5) = 2881.83; % $ pallet_rev(6) = 2887.71; % $ pallet_rev(7) = 2881.83; % $ % total cost per revision total_rev = cart_rev + pallet_rev; % $ % percent total cost per revision cart_rev_percent = cart_rev./total_rev; pallet_rev_percent = pallet_rev./total_rev; % plot figure(1) p1 = plot(cart_rev,'o-','MarkerSize',5); set(p1, 'markerfacecolor', get(p1, 'color')); hold on p2 = plot(pallet_rev,'o-','MarkerSize',5);

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set(p2, 'markerfacecolor', get(p2, 'color')); p3 = plot(total_rev,'o-','MarkerSize',5); set(p3, 'markerfacecolor', get(p3, 'color')); grid on; grid minor xlabel('Iteration','FontSize',15) ylabel('Cost [$]','FontSize',15) legend('Cart Cost','Pallet Cost','Total Cost','FontSize',10) xticks(0:length(cart_rev)) title('Cost Analysis for Cart and Pallet Design Iterations [1]','FontSize',15) figure(2) p4 = plot(cart_rev_percent*100,'o-','MarkerSize',5); set(p4, 'markerfacecolor', get(p4, 'color')); hold on p5 = plot(pallet_rev_percent*100,'o-','MarkerSize',5); set(p5, 'markerfacecolor', get(p5, 'color')); grid on; grid minor xlabel('Iteration','FontSize',15) ylabel('Percent of Total Cost [%]','FontSize',15) legend('Cart','Pallet','FontSize',10) xticks(0:length(cart_rev)) title('Cost Analysis for Cart and Pallet Design Iterations [2]','FontSize',15) %% ------------------------ END CODE -------------------------

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” ”

” x 72”

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• Sales or use taxes• Export packaging.• Freight to jobsite.• Factory load testing full or partial (we will perform factory functional • Field installation, startup & checkout, load testing, minor adjustments during product break in period,

• Safety fencing for perimeter of unit.

Bushman Equipment, Inc.’s current standard terms and conditions: