Rangka atau chasis ini perlu didesain agar mampu mengatasi beban dan gaya-gaya yang terjadi selama proses pengoperasian dilahan, serta mampu menjaga stabilitas dan keamanan pengguna. Rangka yang dirancang dengan baik akan mampu menanggung beban statis dan dinamis. Beban statis meliputi berat mesin dan stabilitas roda, sementara beban dinamis terjadi saat mesin dioperasikan dan mengalami getaran saat pengolahan tanah. Diharapkan penelitian akan memberikan kontribusi dalam mengembangkan alat pertanian yang telah dilaksanakan pada bulan Desember 2022 sampai dengan Maret 2023 di Laboratorium Mekanisasi Pertanian, Fakultas Pertanian, Universitas Borneo Tarakan. Penelitian ini terdiri dari beberapa tahapan yaitu desain kultivator, simulasi, rancang bangun alat, setelah parameter penelitian ini didapatkan hasil dari meshing rangka kultivator secara umum, dengan nilai skewness sebesar 0,5 yang menunjukkan kondisi yang aman. Didapatkan jumlah node yang dihasilkan adalah sebesar 386,514, sementara jumlah elemen yang didapatkan mencapai 69,043. Equivalent stress yang didapatkan 0,0008893 Pa dan maksimal sebesar 118,48 Mpa, terdapat bagian rangka yang kitis yaitu pada sambungan rangka bagian atas dan bagian bawah dekat dengan pillow block. Namun rangka kultivator ini dalam kategori aman dikarenakan nilai yang didapat maksimal dari alat masih kecil dibandingkan dengan nilai tegangan maksimal material yaitu 220 Mpa, dan Nilai deformation dari hasil analisis yang didapatkan menunjukkan nilai deformasi minimal 0 mm dan nilai deformasi maksimal 0,20834 mm, dalam tahapan deformasi ini tergolong aman dikarenakan nilai 0,20834 mm masih dalam daerah elastis sehingga jika beban yang didapatkan 0 maka rangka bisa kembali ke posisi semula atau nilai deformasi kembali 0, Hasil analisis Fatigue menggunakan gerber mean stress theory dengan diberikan beban berat 18 kg dan didapatkan hasil yang maksimal yaitu 1.000.000 kali penggunaan sedangkan hasil minimal berada pada 173,910. Rangka kultivator setelah di desain berada dalam kategori aman serta kondisi berat beban mesin dapat ditahan sebesar 18 kg dan di lengkapi tumpuan roda poros.
Kata Kunci: Desain, Simulasi, Chasis, Kultivator

A frame or chassis must be built with the capacity to withstand the loads and forces encountered during field operations while also maintaining user stability and safety. A well-designed frame will be able to withstand static and dynamic loads. Static load includes the weight of the machine and wheel stability, while dynamic load occurs when the machine is operated and experiences vibration during soil cultivation. It is expected that the research can contribute to the development of agricultural equipment that was implemented in December 2022 until March 2023 at the Agricultural Mechanization Laboratory, Faculty ofAgriculture, University of Borneo Tarakan. This research consisted of several stages, namely cultivator design, simulation, and tool design. Following the meshing of the cultivator frame generally, with a skewness value of 0.5 that indicated a safe situation, the research's parameters were established. The number of nodes produced was 386,514, while the number of elements obtained was 69,043. The equivalent stress obtained was 0.0008893 Pa and the maximum was 1 18.48 Mpa. There was a small part of the frame which wass at the connection of the upper and lower frame near the pillow block. However, the frame of this cultivator was in the safe category because the maximum value obtained from the tool was still small compared to the maximum stress value of the material which was 220 Mpa, and the value of deformation from the results of the analysis obtained showed the minimum value of deformation was 0 mm and the value of maximum deformation was 0.20834 mm. This stage of deformation was classified as safe because the value of 0.20834 mm was still in the elastic region so that if the load obtained was 0 then the frame could return to its original position or the deformation value returns to 0. The maximum result was 1,000,000 times of use while the minimum result was 173,910. The frame of the cultivator after being designed was in a safe category and the condition of the weight of the machine load could be held as much as 18 kg and it was equipped with an axle wheel support. Keywords: Design, Simulation, Chasis, Cultivator