{"id":188024,"date":"2021-08-09T10:20:30","date_gmt":"2021-08-09T10:20:30","guid":{"rendered":"\/forum\/forums\/reply\/188024\/"},"modified":"2021-08-09T10:30:37","modified_gmt":"2021-08-09T10:30:37","slug":"188024","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/188024\/","title":{"rendered":"Reply To: Correct method to obtain acceleration curve from a drop test (Ansys Workbench)"},"content":{"rendered":"<p>Thanks for your reply, <br \/>\nThe discussion you shared is very informative.<br \/>\nIn order to prevent alias, the sampling rate must be set to very high.<br \/>\nTherefore, I have increased my output point to 5000. <br \/>\nHowever, there is still some discrepancy from the data I got from these 2 methods:<br \/>\n1) differentiate the velocity\/time data, apply low pass filter<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/587\/5OVVTILQ7HW7.png\" width=\"784\" height=\"609\" \/>2) directly apply low pass filter to the directional acceleration<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/895\/NHWRWL7B0FZE.png\" width=\"788\" height=\"607\" \/>Acceleration got from Method 1 is closer to experimental data.<br \/>\nCould you explain the discrepancy of the data between these 2 method? which are the correct method of obtaining acceleration? <\/p>\n","protected":false},"template":"","class_list":["post-188024","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Thanks for your reply, The discussion you shared is very informative. In order to prevent alias, the sampling rate must be set to very high. Therefore, I have increased my output point to 5000. However, there is still some discrepancy from the data I got from these 2 methods: 1) differentiate the velocity\/time data, apply\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/188024\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Correct method to obtain acceleration curve from a drop test (Ansys Workbench) | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Thanks for your reply, The discussion you shared is very informative. In order to prevent alias, the sampling rate must be set to very high. Therefore, I have increased my output point to 5000. 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In order to prevent alias, the sampling rate must be set to very high. Therefore, I have increased my output point to 5000. 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In order to prevent alias, the sampling rate must be set to very high. Therefore, I have increased my output point to 5000. 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In order to prevent alias, the sampling rate must be set to very high. Therefore, I have increased my output point to 5000. 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