{ "item_title" : "An Investigation of a Simplified Gouging Model", "item_author" : [" Gregory S. Rickerd "], "item_description" : "Gouging is a type of structural failure that becomes important when two metals slide against each other at velocities in the range of 1.5 kilometers per second. A computer model has previously been used to model the development of gouging at the Holloman High Speed Test Track. This model has not been experimentally verified to be correct, due to the complexity of the model. This research develops a simplified model that can be experimentally verified. The computer program utilized in this research was studied to determine the most appropriate options to use in simulations. This was accomplished by modeling a Taylor impact test and comparing to published experimental results. The cylindrical impact specimen utilized in the simplified model was developed through use of the Buckingham-Pi theorem, and can be fired from most standard compressed air guns. Simulations using the simplified model showed excellent agreement with simulations using the physical sled properties. Plasticity observed in both the rod and target was very similar to that seen in the physical sled simulations. The high- pressure core, which initiates gouging in the physical sled simulation, was found to exist in the simplified model as well.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/24/958/449/1249584493_b.jpg", "price_data" : { "retail_price" : "18.95", "online_price" : "18.95", "our_price" : "18.95", "club_price" : "18.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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