Draft Force Determination for Cultivator Shares with Different Mouth Structures Using The Finite Element Method

Mustafa Boydaş

Makale detayları

Draft Force Determination for Cultivator Shares with Different Mouth Structures Using The Finite Element Method

Yazarlar:

Mustafa Boydaş

Yayıncı:

Tekirdag Namik Kemal University

Dergi:

Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 2, pp.306-317

Belge Tipi:

Makale

Yayın Tarihi:

5/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289589

pISSN:

1302-7050

Anahtar kelimeler:

Özet:

 The most important dynamic parameter to be known in the design and optimization of soil tillage tools and machines is the draft force. Today, the draft force in soil cultivation tools and machines can be determined by different methods. These are experimental, analytical, and numerical methods. Among the numerical methods, especially the finite element method has been widely used in the design of soil tillage tools and machinery and in the estimation of the draft force. The use of the finite element method in the soil-machine relationship has provided great convenience and economy in the design, optimization, and evaluation of new equipment and machines. One of the important software used to define the soil-machine relationship is ANSYS. ANSYS has been used in this study because it is a powerful numerical software program that analyzes the soil-machine relationship using the finite element method and gives very close results by entering real soil parameters and boundary conditions into the simulation. In the study, shares with different mouth structures flat, pointed and fork-shaped that can be used for cultivators were used. The draft force values of shares at different operating speeds 1.5 m s-1, 2.5 m s-1, and 3.5 m s-1 were determined. There are buried soil models in ANSYS and the draft force values obtained with the cultivator shares were determined by using the Drucker and Prager model among these models. This model is stated as the best model representing the soil-machine relationship. It was determined that the draft force increased with the increase of the forward speed. However, it was determined that the fork share was less affected by the speed increase compared to the other shares. This situation has made this cultivator shares a more important position than the others. The highest draft force was found to be 1.64 kN with the flat share at a forward speed of 3.5 m s-1. The lowest draft force was found to be 0.39 kN with the fork share at a forward speed of 1.5 m s-1.

 The most important dynamic parameter to be known in the design and optimization of soil tillage tools and machines is the draft force. Today, the draft force in soil cultivation tools and machines can be determined by different methods. These are experimental, analytical, and numerical methods. Among the numerical methods, especially the finite element method has been widely used in the design of soil tillage tools and machinery and in the estimation of the draft force. The use of the finite element method in the soil-machine relationship has provided great convenience and economy in the design, optimization, and evaluation of new equipment and machines. One of the important software used to define the soil-machine relationship is ANSYS. ANSYS has been used in this study because it is a powerful numerical software program that analyzes the soil-machine relationship using the finite element method and gives very close results by entering real soil parameters and boundary conditions into the simulation. In the study, shares with different mouth structures flat, pointed and fork-shaped that can be used for cultivators were used. The draft force values of shares at different operating speeds 1.5 m s-1, 2.5 m s-1, and 3.5 m s-1 were determined. There are buried soil models in ANSYS and the draft force values obtained with the cultivator shares were determined by using the Drucker and Prager model among these models. This model is stated as the best model representing the soil-machine relationship. It was determined that the draft force increased with the increase of the forward speed. However, it was determined that the fork share was less affected by the speed increase compared to the other shares. This situation has made this cultivator shares a more important position than the others. The highest draft force was found to be 1.64 kN with the flat share at a forward speed of 3.5 m s-1. The lowest draft force was found to be 0.39 kN with the fork share at a forward speed of 1.5 m s-1.

 The most important dynamic parameter to be known in the design and optimization of soil tillage tools and machines is the draft force. Today, the draft force in soil cultivation tools and machines can be determined by different methods. These are experimental, analytical, and numerical methods. Among the numerical methods, especially the finite element method has been widely used in the design of soil tillage tools and machinery and in the estimation of the draft force. The use of the finite element method in the soil-machine relationship has provided great convenience and economy in the design, optimization, and evaluation of new equipment and machines. One of the important software used to define the soil-machine relationship is ANSYS. ANSYS has been used in this study because it is a powerful numerical software program that analyzes the soil-machine relationship using the finite element method and gives very close results by entering real soil parameters and boundary conditions into the simulation. In the study, shares with different mouth structures flat, pointed and fork-shaped that can be used for cultivators were used. The draft force values of shares at different operating speeds 1.5 m s-1, 2.5 m s-1, and 3.5 m s-1 were determined. There are buried soil models in ANSYS and the draft force values obtained with the cultivator shares were determined by using the Drucker and Prager model among these models. This model is stated as the best model representing the soil-machine relationship. It was determined that the draft force increased with the increase of the forward speed. However, it was determined that the fork share was less affected by the speed increase compared to the other shares. This situation has made this cultivator shares a more important position than the others. The highest draft force was found to be 1.64 kN with the flat share at a forward speed of 3.5 m s-1. The lowest draft force was found to be 0.39 kN with the fork share at a forward speed of 1.5 m s-1.

 Toprak işleme alet ve makinalarının tasarımında ve optimizasyonunda bilinmesi gereken en önemli dinamik parametre çeki kuvvetidir. Günümüzde toprak işleme alet ve makinalarında çeki kuvveti değişik yöntemlerle belirlenebilmektedir. Bunlar deneysel, analitik ve nümerik yöntemlerdir. Nümerik yöntemler içinde özellikle sonlu elemanlar yöntemi toprak işleme alet ve makinalarının tasarımında ve çeki kuvveti tahminlerinde yaygın olarak kullanılmaya başlanmıştır. Toprak makine ilişkisinde sonlu elemanlar yönteminin kullanılması yeni ekipmanların ve makinaların tasarım, optimizasyon ve değerlendirilmesinde büyük kolaylıklar ve ekonomiklik sağlamıştır. Toprak makine ilişkisini tanımlamada kullanılan önemli yazılımlardan biri ANSYS dir. ANSYS Sonlu elemanlar yöntemini kullanarak toprak-makine ilişkisini analiz edebilen güçlü bir nümerik yazılım programı olması ve gerçek toprak parametrelerinin ve sınır şartlarının simülasyona girilmesiyle gerçeğe çok yakın sonuçlar vermesi nedeniyle bu çalışmada kullanılmıştır. Çalışmada, kültivatörler için kullanılabilecek farklı ağız yapılarına sahip düz, sivri ve çatal şekilli uç demirleri kullanılmıştır. Bu uç demirlerinin farklı çalışma hızlardaki 1.5 m s-1, 2.5 m s-1 ve 3.5 m s-1 çeki kuvveti değerleri belirlenmiştir. ANSYS içerisinde gömülü toprak modelleri mevcut olup bu modeller içerisinden Drucker and Prager modeli kullanılarak uç demirleri ile elde edilen çeki kuvveti değerleri belirlenmiştir. Bu model toprak makine ilişkisini temsil eden en iyi model olarak belirtilmektedir. İlerleme hızının artması ile çeki kuvvetinin arttığı belirlenmiştir. Ancak çatal uç demirinin diğer uç demirlerine göre hız artışından daha az etkilendiği belirlenmiştir. Bu durum bu uç demirini diğerlerinden daha önemli bir konuma getirmiştir. En yüksek çeki kuvveti 3.5 m s-1 ilerleme hızında düz uç demiri ile 1.64 kN olarak bulunmuştur. En düşük çeki kuvveti ise 1.5 m s-1ilerleme hızında çatal uç demiri ile 0.39 kN olarak bulunmuştur.

Makale detayları

Draft Force Determination for Cultivator Shares with Different Mouth Structures Using The Finite Element Method

Yazarlar:

Mustafa Boydaş

Yayıncı:

Tekirdag Namik Kemal University

Dergi:

Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 2, pp.306-317

Belge Tipi:

Makale

Yayın Tarihi:

5/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289589

pISSN:

1302-7050

Tillage

Draft force

Cultivator shares

Finite element method

Soil-machine interactionToprak İşleme

Çeki Kuvveti

Kültivatör Uç Demiri

Sonlu Elemanlar Metodu

Toprak-Makine ilişkisi

Sayı

Makale detayları

Yazarlar: Mustafa Boydaş

Yayıncı: Tekirdag Namik Kemal University

Dergi: Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 2, pp.306-317

Belge Tipi: Makale

Yayın Tarihi: 5/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001289589

pISSN: 1302-7050

Sayı

Yazarlar:

Mustafa Boydaş

Yayıncı:

Tekirdag Namik Kemal University

Dergi:

Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 2, pp.306-317

Belge Tipi:

Makale

Yayın Tarihi:

5/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289589

pISSN:

1302-7050