{"id":359432,"date":"2024-03-28T12:37:07","date_gmt":"2024-03-28T12:37:07","guid":{"rendered":"\/forum\/forums\/topic\/negative-stiffness-in-x-position-between-pm-and-steel-stator\/"},"modified":"2024-03-28T12:37:07","modified_gmt":"2024-03-28T12:37:07","slug":"negative-stiffness-in-x-position-between-pm-and-steel-stator","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/negative-stiffness-in-x-position-between-pm-and-steel-stator\/","title":{"rendered":"Negative stiffness in x-position between PM and steel stator"},"content":{"rendered":"<p>Hi all,<\/p>\n<p>I&#8217;m trying to simulate the negative stiffness graph in my interior permanent magnet motor. The result should be linear as the force should be increase when the PM is near the stator teeth. I use the rotor base material as epoxy and I also changing the material to steel but the behavior is still the same. Could anyone help on this point?<\/p>\n<p>&nbsp;<\/p>\n<p>Thank you so much.<\/p>\n<p>Anunda<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/28-03-2024-1711629402-Screenshot 2024-03-28 193609.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-359432","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi all,I&#039;m trying to simulate the negative stiffness graph in my interior permanent magnet motor. The result should be linear as the force should be increase when the PM is near the stator teeth. I use the rotor base material as epoxy and I also changing the material to steel but the behavior is still\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/negative-stiffness-in-x-position-between-pm-and-steel-stator\/\" \/>\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=\"Negative stiffness in x-position between PM and steel stator | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi all,I&#039;m trying to simulate the negative stiffness graph in my interior permanent magnet motor. The result should be linear as the force should be increase when the PM is near the stator teeth. 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The result should be linear as the force should be increase when the PM is near the stator teeth. I use the rotor base material as epoxy and I also changing the material to steel but the behavior is still\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/28-03-2024-1711629402-Screenshot 2024-03-28 193609.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/negative-stiffness-in-x-position-between-pm-and-steel-stator\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/negative-stiffness-in-x-position-between-pm-and-steel-stator\\\/#listItem\",\"name\":\"Negative stiffness in x-position between PM and steel stator\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/negative-stiffness-in-x-position-between-pm-and-steel-stator\\\/#listItem\",\"position\":3,\"name\":\"Negative stiffness in x-position between PM and steel stator\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/negative-stiffness-in-x-position-between-pm-and-steel-stator\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/negative-stiffness-in-x-position-between-pm-and-steel-stator\\\/\",\"name\":\"Negative stiffness in x-position between PM and steel stator | Ansys Learning Forum\",\"description\":\"Hi all,I'm trying to simulate the negative stiffness graph in my interior permanent magnet motor. 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