{"id":395639,"date":"2024-11-28T10:31:47","date_gmt":"2024-11-28T10:31:47","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/couple-field-harmonic-analysis-for-piezoceramic-sensor-pzt-patch\/"},"modified":"2024-11-28T10:31:47","modified_gmt":"2024-11-28T10:31:47","slug":"couple-field-harmonic-analysis-for-piezoceramic-sensor-pzt-patch","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/couple-field-harmonic-analysis-for-piezoceramic-sensor-pzt-patch\/","title":{"rendered":"Couple-field harmonic Analysis for piezoceramic sensor (PZT patch)"},"content":{"rendered":"<p>&lt;p&gt;I am trying to model PZT patch (10mm x 10mm x 0.3mm) bonded on a beam (700mm x 150mm x 150mm) and perform coupled field harmonic analysis in order to obtain impedance (impedance vs frequency plot) The help manual for the: Mechanical Technology Showcase: Example Problems Chapter 39: &lt;span class=&#8221;&rdquo;&rdquo;highlight&rdquo;&rdquo;&#8221;&gt;Wire&lt;\/span&gt;&nbsp;&lt;span class=&#8221;&rdquo;&rdquo;highlight&rdquo;&rdquo;&#8221;&gt;Bonding&lt;\/span&gt; Ultrasonic Transducer states that the degree of freedom needs to be coupled as shown in fig. <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/22-11-2024-1732272454-mceclip0.png\" width=\"551\" height=\"419\" \/> &nbsp;So I tried to couple the bottom face of pzt patch (bottom voltage coupling) and top face of the PZT patch was coupled (tom voltage coupling). Then 0 Volt (voltage ground) is applied at the bottom face of the pzt patch and 1 Volt (voltage) at the top face of the pzt patch.&nbsp; The physics region provided in model is as follows: <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/28-11-2024-1732788447-mceclip1.png\" width=\"718\" height=\"404\" \/>&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/28-11-2024-1732788494-mceclip2.png\" width=\"844\" height=\"475\" \/> The model was executed, but following error came up. <img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/28-11-2024-1732787415-mceclip0.png\" \/> &nbsp; &nbsp; In order to solve the analysis successfully, I tried removing the coupling and the analysis was performed. The results were as shown in below figure. According to me, I feel these results are not correct. Kindly tell me what I have done wrong so that I could get proper results of impedance. <img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/28-11-2024-1732789892-blobid0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-395639","topic","type-topic","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=\"I am trying to model PZT patch (10mm x 10mm x 0.3mm) bonded on a beam (700mm x 150mm x 150mm) and perform coupled field harmonic analysis in order to obtain impedance (impedance vs frequency plot) The help manual for the: Mechanical Technology Showcase: Example Problems Chapter 39: Wire Bonding Ultrasonic Transducer states that\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" 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