1) Use MATLAB fminsearch to design a helical compression spring for a coil-over shock absorber in...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1) Use MATLAB "fminsearch" to design a helical compression spring for a coil-over shock absorber in a small unmanned ground vehicle (UGV) based on the following specifications. You must attach hard copy of your code and MATLAB output. minimum weight must fit over 0.57 inch DIA shock body minimum working force Fw= 15 lbf at working length Lw=1.5 inch minimum factor of safety Nfs of 1.0 to prevent yield at shut length L. (fully compressed) note: use Kw not K, for shear stress free length Lr= 3.0 inch, total number of coils N₁ = 14 round steel music wire or round zinc-plated steel music wire squared (closed) ends or squared-and-ground ends Current design - N₁ = 14, L=3.0 in, OD=0.80 in, d=0.081 in, w=0.046 lbf, Nrs=1.30 2) Select a spring that most closely matches your optimal design from McMaster-Carr. Optimal design McMaster-Carr wire diameter d [in] coil OD [in] total number of coils N₁ 14 free length Lr [in] weight [lbf] coil ID [in] spring rate k [lbf/in] force at Lw [lbf] shut length L, [in] factor of safety NFS at L. McMaster-Carr part number cost each 3) Will your optimal spring buckle at Lw? yes no Show your work! Extra credit - Explore the sensitivity of your design to number of coils and free length. 3.0 1) Use MATLAB "fminsearch" to design a helical compression spring for a coil-over shock absorber in a small unmanned ground vehicle (UGV) based on the following specifications. You must attach hard copy of your code and MATLAB output. minimum weight must fit over 0.57 inch DIA shock body minimum working force Fw= 15 lbf at working length Lw=1.5 inch minimum factor of safety Nfs of 1.0 to prevent yield at shut length L. (fully compressed) note: use Kw not K, for shear stress free length Lr= 3.0 inch, total number of coils N₁ = 14 round steel music wire or round zinc-plated steel music wire squared (closed) ends or squared-and-ground ends Current design - N₁ = 14, L=3.0 in, OD=0.80 in, d=0.081 in, w=0.046 lbf, Nrs=1.30 2) Select a spring that most closely matches your optimal design from McMaster-Carr. Optimal design McMaster-Carr wire diameter d [in] coil OD [in] total number of coils N₁ 14 free length Lr [in] weight [lbf] coil ID [in] spring rate k [lbf/in] force at Lw [lbf] shut length L, [in] factor of safety NFS at L. McMaster-Carr part number cost each 3) Will your optimal spring buckle at Lw? yes no Show your work! Extra credit - Explore the sensitivity of your design to number of coils and free length. 3.0
Expert Answer:
Related Book For
Shigleys Mechanical Engineering Design
ISBN: 978-1121345317
9th edition
Authors: Richard G. Budynas, J. Keith Nisbett
Posted Date:
Students also viewed these mechanical engineering questions
-
A helical compression spring is wound using 0.105-in-diameter music wire. The spring has an outside diameter of 1.225 in with plain ground ends, and 12 total coils. (a) What should the free length be...
-
A helical compression spring is wound using 2.5-mm-diameter music wire. The spring has an outside diameter of 31 mm with plain ground ends, and 14 total coils. (a) What should the free length be to...
-
Jock R Design and construct the topology based on the following show ip route output. Must provide type of interfaces used with proper IP Addresses for each interface and cabling. Routers and...
-
Stock Valuation While it comes to investing, picking the right stock plays a crucial role. Careful research and patience are needed. One needs to check several aspects of the company before...
-
Media, Inc., an advertising agency, applies overhead to jobs on the basis of direct professional labor hours. Overhead was estimated to be $150,000, direct professional labor hours were estimated to...
-
Show that a) x2 is o(x3). b) x log x is o(x2). c) x2 is o(2x ). d) x2 + x + 1 is not o(x2).
-
Presented below are the consolidated financial statements of Casual Clothing, Inc. In 2017, amortization expense for intangibles was \($2,700\) and depreciation expense for buildings, furniture &...
-
A widget manufacturer currently produces 200,000 units a year. It buys widget lids from an outside supplier at a price of $2 a lid. The plant manager believes that it would be cheaper to make these...
-
Builtrite has come up with the following capital structure which management believes is optimal: Debt 50% Preferred Stock 10% Common Stock 40% Preferred Stock: Builtrite could sell a $46 par value...
-
1. Develop a simulation model for 52 weeks of operation at Ebony. Graph the inventory of soap over time. What is the total cost (inventory cost plus production change cost) for the 52 weeks? 2. Run...
-
1. Explain the pre-conditions under which collective bargaining can be practiced in Jamaica. Cite laws, regulations and conventions to support your answer. [10 marks] 2. The contract of employment is...
-
Do public sector organizations still have inadequate management controls (as was observed by Anthony and Young)?
-
Why and to what extent can compliance be included in performance audits?
-
Is management control fundamentally different in public sector organizations compared with their private sector counterparts?
-
Of all the blockchain use cases, which offers the best opportunity to enhance the adaptability and agility of organizations?
-
What are the benefits of CFSs in the public sector?
-
Example of Reward Managers at the chocolate factory were excited to roll out a new employee discount program, which offered 20% off all company products and 50% off gym memberships. Saketh loved...
-
If the cylinder described in Problem 21.3 were initially heated to 500F, how long would it take for the center of the cylinder to cool to 240F if it were constructed of a. Copper? b. Brass? c. Nickel?
-
Problem 169 is preliminary to analyzing the brake. A rigid molded non-asbestos lining is used dry in the brake of Prob. 169 on a cast iron drum. The shoes are 6 in wide and subtend a 90 arc. Find the...
-
A pressure cylinder has an outer diameter do, wall thickness t, internal pressure pi, and maximum allowable shear stress Ïmax. In the table given, determine the appropriate value ofx. Tmax Pi do...
-
Derive Eq. (617). Rearrange the equation to solve for N. Sf Sut N(log f )/3 1 N 103
-
How many years does it take to depreciate a piece of equipment with a five-year recovery period using MACRS? Why does this happen?
-
Determine the current liabilities to net worth ratio for the commercial construction company in Figures 6-1 and 6-2 . What insight does this give you into the companys financial operations? Data From...
-
Determine the current ratio for the commercial construction company in Figures 6-1 and 6-2. What insight does this give you into the companys financial operations? Data From Figure 6-1 Data From...
Study smarter with the SolutionInn App