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Machinery and Localized Stresses #5099878 05/08/19 05:57 PM
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MolaKule Offline OP
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A basic rod and disk are forged and machined to make a wheel axle, with the rod at a right angle to the disk. The other end of the rod is splined inside the differential housing.

The disk is further machined and tapped to make a wheel hub.

It was later found that cracks were occurring where the rod meets the disk.


Supply the missing word:

A ___________ geometry at the rod-disk interface would have prevented cracks from forming.



Open to all.


Charlie Eppes: "Larry, have a minute?"
Dr. Larry Fleinhardt: "Yes. Because we all have exactly the same number of minutes at all times, do we not?" From NUMB3RS
Re: Machinery and Localized Stresses [Re: MolaKule] #5099888 05/08/19 06:06 PM
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carviewsonic Offline
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'tapered' is my guess..


'18 Impala
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Re: Machinery and Localized Stresses [Re: MolaKule] #5099897 05/08/19 06:17 PM
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CT8 Offline
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Fillet.


2015 F150 2.7
2018 F350 6.2
Re: Machinery and Localized Stresses [Re: MolaKule] #5099899 05/08/19 06:21 PM
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4WD Online Confused
Online Confused
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Radius

Re: Machinery and Localized Stresses [Re: MolaKule] #5099903 05/08/19 06:25 PM
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A_Harman Offline
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fillet


2008 Dodge Ram 3500 diesel/G56
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2002 Camaro Z28 LS1/6-speed
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1972 GMC 1500 shortbed project truck 307/SM465
Re: Machinery and Localized Stresses [Re: MolaKule] #5099906 05/08/19 06:28 PM
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vw7674 Online Content
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'radiused'

Re: Machinery and Localized Stresses [Re: MolaKule] #5099922 05/08/19 06:40 PM
Joined: Apr 2018
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Imp4 Online Content
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Not sure of the exact nomenclature you're looking for but you need a radiused transition at that location in order to prevent a localized stress riser.

Also, depending on the raw material being forged and the post forge quenching process, a tempering or solution annealing heat treatment will also aid in preventing cracking of the finished product.


2001 Mitsubishi Galant 2.4 - 165k+
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Re: Machinery and Localized Stresses [Re: MolaKule] #5099982 05/08/19 07:30 PM
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ctechbob Offline
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Rounded?


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Re: Machinery and Localized Stresses [Re: MolaKule] #5100050 05/08/19 08:25 PM
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heynow Offline
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Filleted or radiused


1991 Acura NSX
2010 X5 35d twin turbo diesel
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Re: Machinery and Localized Stresses [Re: MolaKule] #5100058 05/08/19 08:36 PM
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Langanobob Offline
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Radiused.

Re: Machinery and Localized Stresses [Re: MolaKule] #5100073 05/08/19 08:46 PM
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ag_ghost Offline
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isotropic?


Kevin
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Re: Machinery and Localized Stresses [Re: MolaKule] #5100089 05/08/19 09:13 PM
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clinebarger Offline
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Fillet Radius?


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Re: Machinery and Localized Stresses [Re: MolaKule] #5100098 05/08/19 09:32 PM
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TMoto Offline
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Fillet is my guess


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Re: Machinery and Localized Stresses [Re: MolaKule] #5100125 05/08/19 10:15 PM
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tcp71 Offline
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chamfered?


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Re: Machinery and Localized Stresses [Re: MolaKule] #5100133 05/08/19 10:26 PM
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scurvy Offline
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"generously filleted"


You are entitled to your own opinion but not your own facts.

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